Orientador: Orivaldo Brunini / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia / Made available in DSpace on 2018-08-03T21:20:43Z (GMT). No. of bitstreams: 1 Silva_EmersonAlvesda_D.pdf: 3690450 bytes, checksum: 6390ce39cfb57c717cf7b670aaf9c875 (MD5) Previous issue date: 2004 / Doutorado / Biologia Vegetal / Doutor em Biologia Vegetal

<p>U&nbsp; radu&nbsp; je&nbsp; analiziran&nbsp; odgovor&nbsp; lokalnih&nbsp; populacija&nbsp; tekunice&nbsp; u&nbsp; Vojvodini&nbsp; na<br />promene&nbsp; uslova&nbsp; klime&nbsp; i&nbsp; kori&scaron;ćenja&nbsp; zemlji&scaron;ta.&nbsp; Odgovori&nbsp; populacija&nbsp; tekunice<br />(tipičnog&nbsp; predstavnika&nbsp; otvorenih&nbsp; stani&scaron;ta&nbsp; i&nbsp; idealnog&nbsp; model&nbsp; organizma)&nbsp; na<br />pomenute promene omogućiće razmatranje kako mere na regionalnom nivou: i)<br />mogu unaprediti za&scaron;titu i očuvanje tekunice ii) ublažiti efekti promene klime i<br />kori&scaron;ćenja&nbsp; zemlji&scaron;ta&nbsp; iii)&nbsp; mogu&nbsp; usaglasiti&nbsp; razvoj&nbsp; poljoprivrede&nbsp; sa&nbsp; očuvanjem<br />biodiverziteta travnatih ekosistema. Kako&nbsp; bi&nbsp; se&nbsp; odgovorilo&nbsp; na&nbsp; pitanja&nbsp; i&nbsp; postavljene&nbsp; hipoteze&nbsp; u&nbsp; radu&nbsp; sprovedeno&nbsp; je terensko&nbsp; istraživanje,&nbsp; kori&scaron;ćen&nbsp; standardni&nbsp; prostorni&nbsp; pristup&nbsp; i&nbsp; ekolo&scaron;ko modelovanje.&nbsp; Sve&nbsp; primenjene&nbsp; tehnike&nbsp; su&nbsp; komplementarne&nbsp; jedna&nbsp; drugoj&nbsp; u dobijanju&nbsp; odgovora&nbsp; na&nbsp; postavljena&nbsp; pitanja&nbsp; gde&nbsp; rezultati&nbsp; jedne&nbsp; analize predstavljaju&nbsp; ulazne&nbsp; podatke&nbsp; za&nbsp; drugu&nbsp; analizu.&nbsp; U&nbsp; tezi&nbsp; su&nbsp; kori&scaron;ćeni&nbsp;&nbsp; podaci dobijeni&nbsp; na&nbsp; osnovu&nbsp; terenskog&nbsp; mapiranja&nbsp; lokalnih&nbsp; populacija&nbsp; i&nbsp; podaci&nbsp; iz eksperimenta&nbsp; modelovanja&nbsp; kao&nbsp; i&nbsp; serija&nbsp; podataka&nbsp; dobijena&nbsp; cenzusom&nbsp; kolonija tekunica i terenskim uzorkovanjem zemlji&scaron;ta i vegetacije. Rasprostranjenje&nbsp; populacija&nbsp; oblikuju&nbsp; klimatski&nbsp; uslovi&nbsp; ali&nbsp; pored&nbsp; abiotičkih faktora&nbsp; uslovljavaju&nbsp; ih&nbsp; i&nbsp; biotički&nbsp; faktori&nbsp; i&nbsp; kretanje&nbsp; jedinki.&nbsp; Promena&nbsp; klime direktno&nbsp; utiče&nbsp; na&nbsp; distribuciju&nbsp; optimalnih&nbsp; uslova.&nbsp; Istraženo&nbsp; je&nbsp; u&nbsp; kojoj&nbsp; meri&nbsp; će doći&nbsp; do&nbsp; promene&nbsp; u&nbsp; distribuciji&nbsp; optimalnih&nbsp; uslova&nbsp; sredine&nbsp; za&nbsp; tekunicu. Potencijalna promena&nbsp; analizirana je&nbsp; uzimajući&nbsp; u obzir klimatski scenario Max Plank&nbsp; Instituta&nbsp; sa&nbsp; tri&nbsp; rcp&nbsp; projekcije&nbsp; i&nbsp; tri&nbsp; generisana&nbsp; prostorna&nbsp; scenarijadistribucije&nbsp; otvorenih&nbsp; travnatih&nbsp; stani&scaron;ta&nbsp; u&nbsp; Vojvodini.&nbsp; Sagledavanje&nbsp; mogućih efekata promene sredinskih uslova&nbsp; dalo je&nbsp; mogućnost da se ukaže na zone koja će&nbsp; biti&nbsp; ključne&nbsp; za&nbsp; očuvanje&nbsp; populacija&nbsp; tekunica&nbsp; i&nbsp; travnatih&nbsp; ekosistema&nbsp; u Vojvodini. Sledeće,&nbsp; s&nbsp; obzirom&nbsp; da&nbsp; disperzija&nbsp; jedinki,&nbsp; dostupnost&nbsp; resursa&nbsp; kao&nbsp; i&nbsp; delovanje lokalnih&nbsp; faktora&nbsp; ugrožavanja&nbsp; (barijere,&nbsp; menadžment&nbsp; stani&scaron;ta,&nbsp; varijabilnost sredinskih uslova, predatorstvo, poljoprivredne aktivnosti) oblikuju distribuciju populacija&nbsp; u&nbsp; prostoru,&nbsp; u&nbsp; radu&nbsp; je&nbsp; analiziran&nbsp; i&nbsp; uticaj&nbsp; promene&nbsp; ovih&nbsp; faktora&nbsp; na distribuciju populacija. Na području lokalnog slatino-stepskog koridora srednjeg Banata istražene su kompozicija biljnih vrsta, upravljanje na stani&scaron;tu, promena u kompoziciji okolnih poljoprivrednih kultura i dinamika populacije. Dobijene su informacije o efektima lokalnih uslova na prisustvo&nbsp; kolonija,&nbsp; veličinu kolonija i kondiciono stanje jedinki. Informacije dobijene u ovim poglavljima&nbsp; su kasnije kori&scaron;ćeni&nbsp; za&nbsp; formiranju&nbsp; seta&nbsp; kriterijuma&nbsp; radi&nbsp; karakterizacije&nbsp; svih&nbsp; mapiranih stani&scaron;ta u Vojvodini. Dalje,&nbsp; veliku&nbsp; ulogu&nbsp; u&nbsp; poljoprivrednom&nbsp; predelu&nbsp; imaju&nbsp; tranziciona&nbsp; stani&scaron;ta&nbsp; koja&nbsp; povezuju&nbsp; lokalne&nbsp; populacije.&nbsp; Identifikovanje&nbsp; koja&nbsp; tranziciona&nbsp; stani&scaron;ta&nbsp; koriste jedinke tekunice je ključno za očuvanje&nbsp; populacija i&nbsp; ublažavanje trena&nbsp; opadanja brojnosti. Na terenu su mapirani distribucioni obrasci lokalnih kolonija tekunice i istraženo je da li postoje razlike na lokalnom i predeonom&nbsp; nivou u distribuciji nastanjenih i napu&scaron;tenih stani&scaron;ta na području Vojvodine. U&nbsp; radu&nbsp; je&nbsp; dalje&nbsp; analizirana&nbsp; mapirana&nbsp; mreža&nbsp; stani&scaron;ta&nbsp; lokalnih&nbsp; populacija&nbsp; i pretpostavljano&nbsp; je&nbsp; da&nbsp; populacije&nbsp; funkcioni&scaron;u&nbsp; i&nbsp; održavaju&nbsp; se&nbsp; u&nbsp; okviru metapopulacione strukture. Sa druge strane, veličina i povr&scaron;ina koju zauzimaju potencijalne&nbsp; metapopulacione&nbsp; struktura&nbsp; mapirane&nbsp; mreže&nbsp; stani&scaron;ta&nbsp; koje&nbsp; se razlikuju&nbsp; u&nbsp; odnosu&nbsp; na&nbsp; okupiranost,&nbsp; kapacitet&nbsp; i&nbsp; povezanost&nbsp; nisu&nbsp; bile&nbsp; poznate. Kako&nbsp; bi&nbsp; se&nbsp; kvantifikovale&nbsp; potencijalne&nbsp; metapopulacione&nbsp; jedinice&nbsp; i&nbsp; utvrdila vijabilnost&nbsp; svake&nbsp; definisane&nbsp; pojedinačne&nbsp; metapopulacione&nbsp; mreže&nbsp; kori&scaron;ćen&nbsp; je metod ključnog fragmenta. Mapirane mreže evaluirane su iz perspektive samog taksona&nbsp; i&nbsp; testiran&nbsp; je&nbsp; potencijalni&nbsp; disperzioni&nbsp; kapacitet.&nbsp; Proverena&nbsp; je permeabilnost predeonog matriksa između mapiranih stani&scaron;ta i identifikovani su potencijalni koridori za jedinke. Ovakav pristup daje uvid&nbsp; u koji deo predela&nbsp; je značajno&nbsp; i&nbsp; neophodno&nbsp; ulagati&nbsp; ograničena&nbsp; sredstva&nbsp; za&nbsp; za&scaron;titu&nbsp; prirode&nbsp; unutar regiona Vojvodine. U&nbsp; tezi&nbsp; je&nbsp; na&nbsp; kraju&nbsp; ocenjen&nbsp; doprinos&nbsp; trenutne&nbsp; regionalne&nbsp; konzervacione&nbsp; prakse za&scaron;titi&nbsp; stani&scaron;ta&nbsp; tekunice,&nbsp; dat&nbsp; pregled&nbsp; slabih&nbsp; tačaka&nbsp; i&nbsp; predlog&nbsp; predeono adaptacionih mera koji će doprineti za&scaron;titi i očuvanju populacije tekunice kao i mozaika otvorenih travnatih stani&scaron;ta.</p> / <p>The study analyzes the&nbsp; European ground squirrel (EGS) population&nbsp; response to land use and climate change&nbsp; in Vojvodina. The response&nbsp; of the EGS population&nbsp; (typical&nbsp; species&nbsp; of&nbsp; open&nbsp; grassland&nbsp; habitats&nbsp; and&nbsp; the&nbsp; ideal&nbsp; model&nbsp; organism)&nbsp; to changes in&nbsp; environmental conditions in this region will enable consideration of following measures at&nbsp; the local and landscape level: i) effective protection and<br />conservation of the EGS and habitat it relay on; ii) climate change and land use mitigation&nbsp; and&nbsp; adaptation&nbsp; iii)&nbsp; how&nbsp; can&nbsp; we&nbsp; harmonize&nbsp; the&nbsp; development&nbsp; of agriculture and preserve&nbsp; the biodiversity of&nbsp; grassland ecosystem&nbsp; in agricultural settings. In order to answer the questions of this study, the field research was conducted, standard spatial approach and ecological modeling were employed. All applied techniques&nbsp; are&nbsp; complementary&nbsp; to&nbsp; one&nbsp; another&nbsp; in&nbsp; obtaining&nbsp; responses&nbsp; to&nbsp; the questions&nbsp; asked.&nbsp; The&nbsp; results&nbsp; of&nbsp; one&nbsp; analysis&nbsp; represent&nbsp; the&nbsp; input&nbsp; data&nbsp; for&nbsp; the following&nbsp; one.&nbsp; The&nbsp; data&nbsp; for&nbsp; the&nbsp; study&nbsp; were&nbsp; obtained:&nbsp; from&nbsp; EGS&nbsp; local populations&rsquo;&nbsp; field&nbsp; mapping,&nbsp; from&nbsp; the&nbsp; modeling&nbsp; experiment,&nbsp; the&nbsp; census campaigned and the field sampling of soil and vegetation. Distribution of populations, which in addition to abiotic factors are conditioned by biotic factors and movement of individuals were evaluated in the context of climate&nbsp; change.&nbsp; Climate&nbsp; change&nbsp; directly&nbsp; affects&nbsp; the&nbsp; distribution&nbsp; of&nbsp; optimalconditions.&nbsp; The&nbsp; potential&nbsp; changes&nbsp; in&nbsp; distribution&nbsp; of&nbsp; optimal&nbsp; environmental conditions for EGS were assessed by considering&nbsp; changes in abiotic factors and the&nbsp; availability&nbsp; of&nbsp; grasslands.&nbsp; The&nbsp; climate&nbsp; scenario&nbsp; obtained&nbsp; using&nbsp; a&nbsp; dynamic vegetation&nbsp; map&nbsp; with&nbsp; three&nbsp; rcp&nbsp; projections&nbsp; and&nbsp; three&nbsp; spatial&nbsp; scenarios&nbsp; for&nbsp; the distribution of open grasslands were used. The extrapolation of a suitable area obtained&nbsp; by&nbsp; presence&nbsp; only&nbsp; model&nbsp; Maxent&nbsp; gives&nbsp; the&nbsp; possibility&nbsp; to&nbsp; point&nbsp; to&nbsp; the zones&nbsp; that&nbsp; will&nbsp; be&nbsp; crucial&nbsp; for&nbsp; preserving&nbsp; the&nbsp; populations&nbsp; and&nbsp; grassland ecosystems in future. Dispersion&nbsp; of&nbsp; individuals,&nbsp; availability&nbsp; of&nbsp; resources&nbsp; and&nbsp; the&nbsp; operation&nbsp; of&nbsp; local threats (e. g. barriers, habitat management, variability of the central conditions, predation, agricultural activities) shape the distribution of&nbsp; populations in space and time. In the area of the local saline steppe corridor of the central Banat in Vojvodina&nbsp; i)&nbsp; the&nbsp; composition&nbsp; of&nbsp; plant&nbsp; species,&nbsp; ii)&nbsp; open&nbsp; grassland&nbsp; habitat management&nbsp; iii)&nbsp; changes&nbsp; in&nbsp; the&nbsp; composition&nbsp; of&nbsp; surrounding&nbsp; crops&nbsp; and&nbsp; iv) population&nbsp; dynamics&nbsp; of&nbsp; EGS&nbsp; have&nbsp; been&nbsp; investigated.&nbsp; The&nbsp; effects&nbsp; of&nbsp; local conditions on the presence, size of colonies and condition of the individuals&nbsp; of EGS were assessed. The&nbsp; information obtained in these chapters was later used to&nbsp; form&nbsp; a&nbsp; set&nbsp; of&nbsp; criteria&nbsp; for&nbsp; the&nbsp; characterization&nbsp; of&nbsp; all&nbsp; mapped&nbsp; habitats&nbsp; in Vojvodina. In the agricultural area, transitional habitats connect local populations of many species. Identifying&nbsp; transitional&nbsp; habitats&nbsp; which potentially&nbsp; can&nbsp; be used by focal species&nbsp; is&nbsp; key&nbsp; to&nbsp; protect&nbsp; and&nbsp; mitigate&nbsp; population&nbsp; decline.&nbsp; For&nbsp; this&nbsp; purpose distribution&nbsp; patterns&nbsp; of&nbsp; the&nbsp; colonies&nbsp; were&nbsp; mapped&nbsp; in&nbsp; the&nbsp; field.&nbsp; The haracteristics&nbsp; and&nbsp; differences&nbsp; among&nbsp; mapped&nbsp; patches&nbsp; at&nbsp; the&nbsp; local&nbsp; and&nbsp; sub landscape scale were detected and evaluated. Later in the study the network of&nbsp; mapped habitats patches was evaluated. It was assumed&nbsp; that&nbsp; mapped&nbsp; populations&nbsp; in&nbsp; Vojvodina&nbsp; function&nbsp; within&nbsp; several&nbsp;&nbsp; metapopulations networks. However, the size and area of potential meta-population networks&nbsp; are&nbsp; likely&nbsp; to&nbsp; differ&nbsp; in&nbsp; relation&nbsp; to&nbsp; occupancy,&nbsp; capacity&nbsp; and&nbsp; habitat connectivity. The knowledge of potential population units was&nbsp; scarce. In&nbsp; order to&nbsp; quantify&nbsp; the&nbsp; potential&nbsp; population&nbsp; units,&nbsp; to&nbsp; determine&nbsp; the&nbsp; viability&nbsp; and conservation&nbsp; priority&nbsp; of&nbsp; each&nbsp; defined&nbsp; habitat&nbsp; network&nbsp; the&nbsp; key&nbsp; patch&nbsp; approach was used. Mapped networks were evaluated from the perspective of the taxon itself&nbsp; and potential dispersed capacity was tested. The ermeability of the matrix area,&nbsp; connectivity&nbsp; of&nbsp; the&nbsp; mapped&nbsp; habitats&nbsp; and&nbsp; the&nbsp; distribution&nbsp; of&nbsp; potential corridors&nbsp; was&nbsp; verified.&nbsp; This&nbsp; approach&nbsp; gives an&nbsp; opportunity&nbsp; to&nbsp; assess to&nbsp; which part&nbsp; of&nbsp; the&nbsp; area&nbsp; and&nbsp; population&nbsp; it&nbsp; is&nbsp; necessary&nbsp; to&nbsp; invest&nbsp; limited&nbsp; resources&nbsp; for nature protection in&nbsp; Vojvodina.The contribution of&nbsp; current regional conservation practice to protection of EGS was evaluated,&nbsp; a brief overview of the weak points and the proposal of preciseadaptation&nbsp; measures&nbsp; that&nbsp; should&nbsp; be&nbsp; taken&nbsp; in&nbsp; Vojvodina&nbsp; are&nbsp; presented&nbsp; in&nbsp; final chapter. The results of this study&nbsp; propose the&nbsp; development of&nbsp; spatial adaption measures&nbsp; and&nbsp; conservation&nbsp; design&nbsp; that&nbsp; will&nbsp; contribute&nbsp; not&nbsp; only&nbsp; in&nbsp; preserving EGS and habitats it relay on&nbsp; but also other wild plant and animal species&nbsp; in this intensively used agricultural settings.</p>