Les cours d’eau sont des vecteurs de dispersion efficaces pour les espèces végétales colonisant les berges, y compris pour celles qui ne sont pas a priori adaptées à ce mode de dispersion. Dans le cas d’espèces invasives, l’étude des traits de dispersion et de colonisation, et leur variabilité, permet la compréhension du potentiel de propagation d’une espèce dans son aire d’invasion et du potentiel d’adaptation à de nouveaux environnements. Le complexe invasif Fallopia est un taxon génotypiquement diverse qui colonise les berges. Son succès reposerait en partie sur la dispersion des propagules végétatives et sexuées. L'objectif de ce travail a été d’étudier les stratégies de dispersion par les cours d’eau, de ce taxon terrestre. Ce travail a permis de quantifier le potentiel de dispersion et de colonisation de Fallopia par l’étude de la flottaison et la viabilité en fonction de la durée d’immersion des propagules. Ce travail a montré que les rhizomes ne flottent pas contrairement aux tiges et aux akènes. La durée de flottaison est liée aux traits morphologiques. La germination des akènes dans l’eau peut allonger cette durée de flottaison. La durée d’immersion ne réduit la viabilité des propagules qu’à partir de 3 semaines. La variabilité observée des traits a permis d’identifier différentes stratégies de propagation du taxon en milieu aquatique. La régénération dans l’eau des tiges et akènes permet leur installation rapide sur le site du dépôt tandis que les rhizomes régénèrent qu’une fois sur le site de dépôt si les conditions sont favorables. Bien que la variation des traits des propagules soit continue entre les taches, il est possible d’identifier, en particulier sur les akènes, des individus ayant des aptitudes à la dispersion sur des longues distances, pouvant participer à la progression du front d’invasion du taxon. Ces résultats montrent que les capacités de dispersion et colonisation des propagules peuvent participer au succès de propagation du taxon par les cours d'eau / Watercourses are efficient dispersal vectors for plant species colonising riverbanks, including those that are not primarily adapted to this dispersal mode. In the case of invasive species, the study of plant traits participating to dispersal and colonization, and their variability, is important to understand the spread potential of one species in the invasive area, as well as its adaptive potential to new environments. The invasive complex Fallopia displays a high genotypic diversity and highly colonises riverbanks. Dispersal of sexual and vegetative propagules could explain their colonization success. The aim of this work is to study the dispersal strategies by watercourses displayed by this terrestrial taxon.This work has quantified the dispersal and colonization potential of Fallopia propagules through the study of their floatation ability and their viability after water exposure. This work demonstrated that rhizomes do not float unlike stem fragments and achenes. Floatability is related to morphological traits. Achene germination in water may increase the floatation time. Il was also demonstrated that viability was only reduced after 3 weeks of water exposure. The variability observed for the traits allows to identify different spread strategies in this taxon. Stem and achene regeneration in water enables a rapid installation in the riverbanks, while rhizomes regenerate after deposition in the riverbank, if environmental conditions are favourable to the development and the survival of the plant. Even if variability of propagule traits is continuous, it is possible to identify, in particular for achenes, individuals that have the capacity to disperse over long distances, and that could participate to the progression of the invasive front of the taxon. These results demonstrated that dispersal and colonization abilities of Fallopia propagules might participate to the spread potential of the species through watercourses

Made available in DSpace on 2017-05-12T14:46:56Z (GMT). No. of bitstreams: 1 Leandro Fleck.pdf: 1897702 bytes, checksum: b3e258336499f4a0de7936279b0ee27c (MD5) Previous issue date: 2014-01-31 / The development of human activities generates high amounts of industrial effluent, which has a high impact on watercourses, mainly due to organic load constituents. Among the methods used to control water pollution, the method of mathematical modeling stands out, a simulation tool that allows the generation of future scenarios. This study proposes to generate a mathematical model of water quality that simulates the process of aerobic self-depuration of organic matter from watercourses. For this purpose, it was used a water bath coupled to a jar test, providing temperature control from 20 to 28 °C, and flow velocity from 0.29 to 0.87 m s-1, similarly to natural conditions. The trials were conducted using a synthetic effluent with an initial COD concentration of 50 mg L-1, based on a Central Composite Design (DCC), composed of seven trials. All trials lasted 15 days, with effluent samples collected daily for the analysis of Chemical Oxygen Demand (COD) and Dissolved Oxygen (OD). A mathematical equation was developed for each day of self-depuration. The final mathematical model gathers 15 equations of self-depuration. The significance of the equations was measured using the analysis of variance to 10%. To validate the proposed model, a self-depuration trial was carried out under the conditions of 26 °C and 0.38 m s-1 with an initial COD concentration of 30 mg L-1. The analysis of variance was performed for the proposed mathematical model as well as the analysis of normality and homoscedasticity for waste, with a significance level of 5%.There are indications that the temperature significantly had an influence in the kinetics of aerobic decomposition of organic matter in the first and from the sixth to the fifteenth day self-depuration. The flow velocity significantly influenced in the eighth and from the twelfth to the fifteenth day of self-depuration, and the interaction between the factors in the eighth and fifteenth day of self-depuration, with p-values lower than the significance level adopted. With a confidence interval of 90%, the equations representing the first and from the seventh to the fifteenth day of self-depuration are statistically significant, with coefficients of determination (R2) greater than 84%. The proposed model adequately described the experimental data obtained in the validation trial, presented p-value of 2.49 E-17, lower than the level of significance adopted, of 5%. Thus, the model proposed can be considered statistically significant, describing the total variation of responses, with a ratio of 99.46%. The proposed mathematical model described the process of self-depuration in watercourses within the temperature and flow velocity intervals in which it was generated / O desenvolvimento das atividades humanas teve como consequência direta a geração de elevada quantidade de efluentes industriais, altamente impactantes aos cursos hídricos receptores, devido principalmente à carga orgânica constituinte. Dentre os métodos utilizados para o controle da poluição hídrica, destaca-se a modelagem matemática, a qual, sendo uma ferramenta de simulação, possibilita a geração de cenários futuros. O presente estudo propõe a geração de um modelo matemático de qualidade da água que possibilite simular o processo de autodepuração aeróbia da matéria orgânica de um corpo hídrico. Para a realização do estudo utilizou-se um banho-maria acoplado a um jar test, possibilitando o controle da temperatura na faixa de 20 a 28 °C e velocidade de fluxo na faixa de 0,29 a 0,87 m s-1, valores típicos encontrados em condições naturais. Os ensaios foram conduzidos utilizando-se efluente sintético a partir de uma concentração inicial de DQO de 50 mg L-1, com base em um Delineamento Composto Central (DCC), composto por 7 ensaios. Todos os ensaios tiveram duração de 15 dias, com coletas diárias de amostras de efluente para análise de Demanda Química de Oxigênio (DQO) e Oxigênio Dissolvido (OD). Gerou-se uma equação matemática para cada dia de autodepuração. O modelo matemático final reúne 15 equações de autodepuração. A significância das equações foi avaliada utilizando-se a Análise de Variância a 10%. Realizou-se a validação do modelo proposto, com base em um ensaio de autodepuração conduzido nas condições de 26 °C e 0,38 m s-1 a partir de uma concentração inicial de DQO de 30 mg L-1. Realizou-se a análise de variância para o modelo matemático proposto, assim como análise de normalidade e homoscedasticidade para os resíduos, com um nível de significância de 5%. Há indícios de que a temperatura influenciou significativamente na cinética de decomposição aeróbia da matéria orgânica no primeiro e do sexto ao décimo quinto dia autodepuração. A velocidade de fluxo influenciou significativamente no oitavo e do décimo segundo ao décimo quinto dia de autodepuração e a interação entre os fatores, no oitavo e no décimo quinto dia de autodepuração, apresentando p-valores menores que o nível de significância adotado. Com um intervalo de confiança de 90%, as equações representativas do primeiro e do sétimo ao décimo quinto dia de autodepuração, são estatisticamente significativas, apresentando coeficientes de determinação (R2) superiores a 84%. O modelo proposto descreveu satisfatoriamente os dados experimentais obtidos no ensaio de validação, apresentado p-valor de 2,49E-17, menor que o nível de significância adotado, de 5%. Assim, considera-se o modelo proposto como sendo estatisticamente significativo, descrevendo a variação total das respostas, com uma proporção de 99,46%. O modelo matemático proposto descreve satisfatoriamente o processo natural de autodepuração em cursos hídricos, dentro dos limites de temperatura e velocidade de fluxo em que foi gerado

A history of the development and organization of artificial land drainage in Manitoba and the involvement of statutory authorities in land drainage is reviewed. The Department of Mines, Resources and Environmental Management Water Resources Division, conservation districts and municipal governments divide jurisdiction and responsibility over watercourses in Manitoba. The Prairie Farm Rehabilitation Administration and the Manitoba Department of Agricultural Technical Services Branch provide conditional assistance to farmers contemplating slough drainage. The Agricultural and Rural Development Agreement and the Fund for Rural Economic Development Program contain comprehensive drainage programs in Manitoba. The common and statute law concerning drainage is reviewed. Legal drainage procedures for individuals, rural municipalities, conservation districts and the Province of Manitoba are outlined. In addition, procedures for obtaining drainage assistance from the Manitoba Department of Agriculture and the Prairie Farm Rehabilitation Administration are also presented. Many statutory provisions concerning drainage in Manitoba are obscure and inconsistent. Clarification of these provisions is sorely needed before drainage law can be used as an effective tool in a wetland preservation effort.

A history of the development and organization of artificial land drainage in Manitoba and the involvement of statutory authorities in land drainage is reviewed. The Department of Mines, Resources and Environmental Management Water Resources Division, conservation districts and municipal governments divide jurisdiction and responsibility over watercourses in Manitoba. The Prairie Farm Rehabilitation Administration and the Manitoba Department of Agricultural Technical Services Branch provide conditional assistance to farmers contemplating slough drainage. The Agricultural and Rural Development Agreement and the Fund for Rural Economic Development Program contain comprehensive drainage programs in Manitoba. The common and statute law concerning drainage is reviewed. Legal drainage procedures for individuals, rural municipalities, conservation districts and the Province of Manitoba are outlined. In addition, procedures for obtaining drainage assistance from the Manitoba Department of Agriculture and the Prairie Farm Rehabilitation Administration are also presented. Many statutory provisions concerning drainage in Manitoba are obscure and inconsistent. Clarification of these provisions is sorely needed before drainage law can be used as an effective tool in a wetland preservation effort.

The aim of this thesis is to prepare a design for the revitalization measures of Biřkovský stream including a design for polders "Karlovka and Niva". The designed measures should protect the village Biřkov from flash floods and enhance further increase of both water management and ecological stability of the basin. The solution is based on the assessment of hydrological, pedological, hydrogeological and vegetation docementation as well as the results of a detailed field survey of the area which is also reported in this thesis.

Nowadays, the water streams located in urban areas have been targeted by several environmental measures that ended up modifying their natural features. These water streams have changed into sewage channels and any intervention over them is not considered shocking by the society anymore. The lack of information and knowledge on the environmental quality of these water streams makes the situation even worse. Aiming to help solving those problems, the Brazilian legislation rules that the population must participate in several stages of the water resources monitoring process. However, It is noticed that, despite the fact of being participation, It does not possesses qualification to achieve the environmental improving actions required for a consequent improving of life quality. It is in this context that the Rapid Bioassessment Protocols for Use in Streams and Rivers, mentioned in this study as PARs, arise as a tool for an integrated analysis of the ecosystems through an easy, simple and fast to apply methodology, consisting of a visual inspection responsible for gathering the physical features of the watercourse under assessment. PARs are thought-out to be simple tools for participatory watercourses assessment. This study aims proposing the use of a Rapid Bioassessment Protocol for Physical Environment Aspects as an instrument of social participation in environmental quality of superficial watercourses inserted in urban regions evaluation, using as a case study the locality of Arroio Laranjeiras in the city of Candelária-RS, Brazil. In order to achieve the target, 10 volunteers were mobilized, all of them linked with the town s politics or members of groups with action of preservation of urban watercourses. In relation of the application of the protocol, by the volunteers, in 3 previously defined points according with the soil using and occupation by different social ranks and access facility, It was possible to check that human actions and urbanization cause negative impacts over Arroio Laranjeiras. Considering that the evaluated watercourse characteristics are different from the ones used in the model protocol It was certified that the utilized protocol needs adaptations. The using of Rapid Bioassessment Protocols showed itself as an important tool of social participation in the environmental evaluation of urban watercourses and also as an important instrument of Environmental Education, considering that it induces to a reflection about many subjects related to environmental quality of watercourses. Bringing to an end, It was notice that this instrument can still be useful not only in the environmental evaluation, but also in the identification of the environmental degradation causes and consequent pursuit by solutions. / Nos dias de hoje, os cursos d água inseridos em zonas urbanas têm sido alvo de diversas intervenções ambientais que modificam suas características naturais. Eles passaram a ser reconhecidos como canais de esgoto e qualquer intervenção de recobrimento não é mais reconhecida como impactante pela sociedade. A falta de informações sobre a qualidade ambiental desses cursos d água agrava ainda mais a situação. Visando auxiliar na resolução desses problemas, a legislação brasileira prevê a participação social em várias etapas do processo de gestão de recursos hídricos. No entanto, percebe-se que embora havendo participação, essa não possui a devida qualificação para realizar as ações de melhoria ambiental necessárias para um consequente aumento da qualidade de vida. Neste contexto, surgem os Protocolos de Avaliação Rápida de Rios (PARs) como instrumentos de análise integrada dos ecossistemas, através de uma metodologia fácil, simples e de rápida aplicação que, por meio de uma inspeção visual, capta as características físicas do curso d água em avaliação. Os PARs são considerados ferramentas simplificadas de avaliação ambiental participativa. A presente pesquisa teve como objetivo propor a utilização de um Protocolo de Avaliação Rápida dos Aspectos Físicos do Meio, como ferramenta de participação social na avaliação da qualidade ambiental dos cursos d água superficiais inseridos em zonas urbanas, tendo como estudo de caso o Arroio Laranjeiras na cidade de Candelária-RS. Para atingir o objetivo foram mobilizados 10 voluntários, ligados ao meio político municipal ou integrantes de grupos com ações em preservação dos cursos d água urbanos. Com relação à aplicação do protocolo, pelos voluntários, em 3 pontos previamente definidos de acordo com as características de uso e ocupação do solo por diferentes classes sociais e facilidade de acesso, foi possível verificar que as atividades antrópicas e a urbanização geram impactos negativos no Arroio Laranjeiras. Considerando que as características do curso d água em avaliação são diferentes das do protocolo utilizado como modelo, constatou-se que o protocolo utilizado nesta pesquisa necessita de adequações. O uso do Protocolo de Avaliação Rápida mostrou-se como importante ferramenta de participação social na avaliação ambiental do curso d água em avaliação e ainda como importante instrumento de Educação Ambiental, considerando que este induz a uma reflexão sobre diversos temas relacionados com a qualidade ambiental de cursos d água. Por fim, verifica-se que esta ferramenta ainda pode ser útil não apenas na avaliação ambiental, mas na identificação das causas de degradação ambiental e posterior busca por soluções.

Made available in DSpace on 2017-07-10T19:23:43Z (GMT). No. of bitstreams: 1 Leandro Fleck.pdf: 1897702 bytes, checksum: b3e258336499f4a0de7936279b0ee27c (MD5) Previous issue date: 2014-01-31 / The development of human activities generates high amounts of industrial effluent, which has a high impact on watercourses, mainly due to organic load constituents. Among the methods used to control water pollution, the method of mathematical modeling stands out, a simulation tool that allows the generation of future scenarios. This study proposes to generate a mathematical model of water quality that simulates the process of aerobic self-depuration of organic matter from watercourses. For this purpose, it was used a water bath coupled to a jar test, providing temperature control from 20 to 28 °C, and flow velocity from 0.29 to 0.87 m s-1, similarly to natural conditions. The trials were conducted using a synthetic effluent with an initial COD concentration of 50 mg L-1, based on a Central Composite Design (DCC), composed of seven trials. All trials lasted 15 days, with effluent samples collected daily for the analysis of Chemical Oxygen Demand (COD) and Dissolved Oxygen (OD). A mathematical equation was developed for each day of self-depuration. The final mathematical model gathers 15 equations of self-depuration. The significance of the equations was measured using the analysis of variance to 10%. To validate the proposed model, a self-depuration trial was carried out under the conditions of 26 °C and 0.38 m s-1 with an initial COD concentration of 30 mg L-1. The analysis of variance was performed for the proposed mathematical model as well as the analysis of normality and homoscedasticity for waste, with a significance level of 5%.There are indications that the temperature significantly had an influence in the kinetics of aerobic decomposition of organic matter in the first and from the sixth to the fifteenth day self-depuration. The flow velocity significantly influenced in the eighth and from the twelfth to the fifteenth day of self-depuration, and the interaction between the factors in the eighth and fifteenth day of self-depuration, with p-values lower than the significance level adopted. With a confidence interval of 90%, the equations representing the first and from the seventh to the fifteenth day of self-depuration are statistically significant, with coefficients of determination (R2) greater than 84%. The proposed model adequately described the experimental data obtained in the validation trial, presented p-value of 2.49 E-17, lower than the level of significance adopted, of 5%. Thus, the model proposed can be considered statistically significant, describing the total variation of responses, with a ratio of 99.46%. The proposed mathematical model described the process of self-depuration in watercourses within the temperature and flow velocity intervals in which it was generated / O desenvolvimento das atividades humanas teve como consequência direta a geração de elevada quantidade de efluentes industriais, altamente impactantes aos cursos hídricos receptores, devido principalmente à carga orgânica constituinte. Dentre os métodos utilizados para o controle da poluição hídrica, destaca-se a modelagem matemática, a qual, sendo uma ferramenta de simulação, possibilita a geração de cenários futuros. O presente estudo propõe a geração de um modelo matemático de qualidade da água que possibilite simular o processo de autodepuração aeróbia da matéria orgânica de um corpo hídrico. Para a realização do estudo utilizou-se um banho-maria acoplado a um jar test, possibilitando o controle da temperatura na faixa de 20 a 28 °C e velocidade de fluxo na faixa de 0,29 a 0,87 m s-1, valores típicos encontrados em condições naturais. Os ensaios foram conduzidos utilizando-se efluente sintético a partir de uma concentração inicial de DQO de 50 mg L-1, com base em um Delineamento Composto Central (DCC), composto por 7 ensaios. Todos os ensaios tiveram duração de 15 dias, com coletas diárias de amostras de efluente para análise de Demanda Química de Oxigênio (DQO) e Oxigênio Dissolvido (OD). Gerou-se uma equação matemática para cada dia de autodepuração. O modelo matemático final reúne 15 equações de autodepuração. A significância das equações foi avaliada utilizando-se a Análise de Variância a 10%. Realizou-se a validação do modelo proposto, com base em um ensaio de autodepuração conduzido nas condições de 26 °C e 0,38 m s-1 a partir de uma concentração inicial de DQO de 30 mg L-1. Realizou-se a análise de variância para o modelo matemático proposto, assim como análise de normalidade e homoscedasticidade para os resíduos, com um nível de significância de 5%. Há indícios de que a temperatura influenciou significativamente na cinética de decomposição aeróbia da matéria orgânica no primeiro e do sexto ao décimo quinto dia autodepuração. A velocidade de fluxo influenciou significativamente no oitavo e do décimo segundo ao décimo quinto dia de autodepuração e a interação entre os fatores, no oitavo e no décimo quinto dia de autodepuração, apresentando p-valores menores que o nível de significância adotado. Com um intervalo de confiança de 90%, as equações representativas do primeiro e do sétimo ao décimo quinto dia de autodepuração, são estatisticamente significativas, apresentando coeficientes de determinação (R2) superiores a 84%. O modelo proposto descreveu satisfatoriamente os dados experimentais obtidos no ensaio de validação, apresentado p-valor de 2,49E-17, menor que o nível de significância adotado, de 5%. Assim, considera-se o modelo proposto como sendo estatisticamente significativo, descrevendo a variação total das respostas, com uma proporção de 99,46%. O modelo matemático proposto descreve satisfatoriamente o processo natural de autodepuração em cursos hídricos, dentro dos limites de temperatura e velocidade de fluxo em que foi gerado

This thesis examines the impact of the concept of ecosystem services in the evaluation of the social costs and benefits of urban watercourse revitalization. Its possible use is shown on the specific selected project. The theoretical part explains the economic substance of ecosystem services, defines related terms, introduces different approaches of various economic schools to the concept and describes its historical development. The practical part then quantifies the net social benefits and costs of the selected project using cost- benefit analysis extended by the concept of ecosystem services. In the conclusion, the objective indicators are calculated and analysed in order to identify the strengths and weeknesses of using the concept of ecosystem services.

En växande befolkning och ett överutnyttjande av jordens resurser kräver att samtliga människor samarbetar för att uppnå miljömålen. De flesta av Sveriges vattendrag har blivit negativt påverkade av mänskliga aktiviteter, så som timmerflottning och utbyggnad av vattenkraft. Vattenkraften står för cirka hälften av Sveriges årliga, totala elproduktion och på grund av att vattnet däms upp blir dammen ett fysiskt hinder vid förflyttning för bland annat lax och öring i vattendragen (ett så kallat vandringshinder).  Idag bedrivs fisket vid Dalälven i Älvkarleby på kompensationsutsatt fisk. Lax och havsöring konkurrerar hårdare om kvarvarande platser och har svårt att passera Kungsådran på grund av vandringshinder. Det finns ett fiskevårdsförslag för restaureringsåtgärder i Kungsådran som kräver att aktörer måste enas i konstruktiva dialoger. Syftet med denna studie är att skapa en insikt i hur utformning av restaurering av Kungsådran i nedre Dalälven kan gynna förutsättningarna för ett förbättrat lax- och havsöringsbestånd genom att studera relevanta aktörers miljöarbeten. Studien syftar även till att studera om restaurering av vattendrag kan utformas i linje med det svenska miljömålet Levande sjöar och vattendrag.  Kvalitativ intervjustudie med semistrukturerade intervjuer användes för att utföra denna studie. Resultatet visar att Kungsådrans lax och havsöring är kraftigt utsatt av vandringshinder. Det finns ett behov av att restaurera Kungsådran enligt det framtagna fiskevårdsförslaget, men att även flera fiskevårdsåtgärder behöver utföras i andra delar av nedre Dalälven för att förbättra lax- och havsöringsbestånden. Det visar även att nya rutiner för uppfödd smolt behöver upprättas.  Diskussion: De uppfödda öringarnas tillstånd är negativt påverkade. På grund av att uppfödd öring har ett avvikande beteende är fortsatt genetiska studier på uppfödd fisk viktigt för att främja genetiska förändringar. Samtidigt som restaurering bidrar till ett ökat bestånd av vilda havsöringar. Forskning är betydelsefullt, utan vetenskap kan vi varken hålla oss uppdaterade eller skapa nya underlag. Däremot finns det en osäkerhet om valet av plats och om tillvägagångsättet som SLU:s aktuella fiskeförsök vid Kungsådran gör mer nytta än onytta i befintligt läge.   Enligt denna studie verkar det i dagsläget svårt att nå det svenska miljömålet Levande sjöar och vattendrag. / A growing population and the over-exploitation of the earth's resources require all people to work together to achieve the environmental objectives. Most of Sweden's watercourses have been negatively affected by human activities, such as timber rafting and the expansion of hydropower. Due to the water being dammed up, the dam becomes a physical barrier to movement in the watercourse (obstacles to migration). Hydropower accounts for about half of Sweden's annual total electricity production.  Today, fishing is carried out at Dalälven in Älvkarleby on compensatory fish. Salmon and sea trout compete harder for remaining places and find it difficult to pass Kungsådran due to hiking obstacles. There is a fishing conservation proposal for restoration in Kungsådran, which requires actors to agree in constructive dialogues. The purpose of this study is to create an insight into how the design of restoration of Kungsådran in lower Dalälven can benefit the conditions for an improved salmon and sea trout population by studying the environmental work of relevant actors. The study also aims to study whether restoration of watercourses can be designed in line with the Swedish environmental goal Living lakes and watercourses. Qualitative interview study with semistructured interviews was used in this study. The results show that fish in Kungsådran is heavily exposed to migratory obstacles. There is a need to restore Kungsådran according to a developed fishing conservation proposal, but that several fishing conservation measures also need to be carried out in other parts of the lower Dalälven river. It also shows that new procedures for bred smolt need to be established.  Discussion: Trout's genetic stock is negatively affected. Partly because bred trout have a deviant behavior and hence continued genetic studies on bred fish are important to pro-mote genetic change.  Research is important, without science we cannot keep up to date or create new data. However, there is uncertainty about the choice of location and whether the procedure that SLUs current fishing experiments at Kungsådran do more good than harm in the existing situation.   According to this study, it currently seems difficult to reach the Swedish environmental goal Of Living Lakes and Watercourses.

The issue of phosphorus in sediments of small watercourses and phosphorus forms are often out of interest, unlike phosphorus and its forms in sediments of water reservoirs. The thesis is focused on the development and evaluation of methods for the determination of total phosphorus by modifying commonly used methods and evaluation of methods for the determination of selected forms of phosphorus in small watercourses sediments. Over 1,152 analyses of sediment samples collected in four seasons and four locations and in three paralell determinations were done. The total phosphorus in the sediments was assessed by four methods, further 7 other forms of phosphorus were evaluated by one to three methods, according to different forms of phosphorus. The data file was subjected to statistical analysis. The aim of statistical analysis was to evaluate phosphorus concentrations, depending on the used method. Additional aim of statistical analysis was to observe dependencies of phosphorus concentrations on metals and identify the impact of periods and locations on the concentration of phosphorus.