Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / O sagui-da-serra-escuro (Callithrix aurita) (É.Geoffroy, 1812) é uma espécie endêmica da Mata Atlântica e ameaçada de extinção, considerada em perigo. Callithrix jacchus e C. penicillata são espécies invasoras no Estado do Rio de Janeiro, que competem com C. aurita pelos mesmos recursos, além de formarem híbridos. Nesse contexto, avaliamos a distribuição espacial das espécies de saguis (nativa e invasoras) no interior e entorno do Parque Nacional da Serra dos Órgãos (PARNASO), RJ, Brasil, através do método de playback, entrevistas, e a modelagem de ocupação e detecção. Além disso, comparamos os dados de distribuição atual com os registros de ocorrência anteriores a esse estudo. Os resultados mostraram que a população de saguis nativos e invasores presentes no interior no parque possuem probabilidade de ocupação (0,20 e 0,22), detecção (0,22 e 0,26) e abundância (12,65 e 13,68 grupos) semelhantes. A ocupação de C. aurita está relacionada às áreas do parque mais afastadas da estrada e com menor interferência humana, provavelmente pelo efeito da elevada altitude nessas regiões. Enquanto que a ocupação dos saguis invasores está relacionada à proximidade dos limites do parque e a maior interferência humana, tanto em maiores altitudes quanto em menores. Registramos o processo de hibridação entre saguis nativos e invasores, e a formação de grupos mistos entre eles, em diversos pontos da região de Petrópolis, inclusive no interior do parque, evidenciando as consequências do processo de invasão. Concluímos que a população de Callithrix aurita no PARNASO é pequena, restrita a uma única região do parque, e parte dela possui contato com grupos de saguis invasores, ou está bem próxima deles. As espécies de saguis invasores ocorrem em alguns locais no interior do parque e por todo o seu entorno. Portanto, há uma pressão dos saguis invasores em direção ao interior do PARNASO. Diante deste processo de extinção local de uma espécie endêmica, ameaçada de extinção, e com uma restrita distribuição geográfica, alertamos para a urgente necessidade de iniciar um eficiente programa de manejo das espécies de saguis invasores, juntamente com a reintrodução de grupos de Callithrix aurita. / The Buffy-tufted-ear marmoset (Callithrix aurita) (É.Geoffroy, 1812) is an endemic species of the Atlantic Forest and endangered. Callithrix jacchus and C. penicillata are invasive species in the state of Rio de Janeiro, which compete with C. aurita for the same resources, and form hybrids. In this context, we evaluated the spatial distribution of species of marmosets (native and invasive) in and around the National Park of the Serra dos Órgãos (PARNASO), RJ, Brazil, through using the playback method, interviews, modeling occupation and detection. Furthermore, we compared the actual distribution data with the occurrence of records preceding this study. The results showed that the population of native marmosets and invaders present in the park have similar occupancy probability (0,20 and 0,22), detectability (0,22 and 0,26) and abundance (12,65 and 13,68 groups). The occupancy of the C. aurita is related to the most remote areas of the park road and less human interference, probably due to high altitude in these regions. While the occupancy of the invader marmosets is related to the proximity of the park boundaries and human interference, both at higher altitudes as for minors. We recorded the process of hybridization between native marmosets and invaders, and the formation of mixed groups among them, in various parts of Petropolis, including inside the park, showing the consequences of the invasion process. We concluded that the population of Callithrix aurita in PARNASO is small, restricted to a single region of the park, and some of it has contact with groups of marmosets invaders, or is very close to them. The species of marmoset invaders occur in some places inside the park and all its surroundings. So there is pressure from invader marmosets toward the interior of PARNASO. Given this local extinction process of an endemic species, endangered, and with a restricted range, it alerts to the urgent need to initiate an effective management program of the species of marmosets invaders among the reintroduction of Callithrix aurita groups.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / O sagui-da-serra-escuro (Callithrix aurita) (É.Geoffroy, 1812) é uma espécie endêmica da Mata Atlântica e ameaçada de extinção, considerada em perigo. Callithrix jacchus e C. penicillata são espécies invasoras no Estado do Rio de Janeiro, que competem com C. aurita pelos mesmos recursos, além de formarem híbridos. Nesse contexto, avaliamos a distribuição espacial das espécies de saguis (nativa e invasoras) no interior e entorno do Parque Nacional da Serra dos Órgãos (PARNASO), RJ, Brasil, através do método de playback, entrevistas, e a modelagem de ocupação e detecção. Além disso, comparamos os dados de distribuição atual com os registros de ocorrência anteriores a esse estudo. Os resultados mostraram que a população de saguis nativos e invasores presentes no interior no parque possuem probabilidade de ocupação (0,20 e 0,22), detecção (0,22 e 0,26) e abundância (12,65 e 13,68 grupos) semelhantes. A ocupação de C. aurita está relacionada às áreas do parque mais afastadas da estrada e com menor interferência humana, provavelmente pelo efeito da elevada altitude nessas regiões. Enquanto que a ocupação dos saguis invasores está relacionada à proximidade dos limites do parque e a maior interferência humana, tanto em maiores altitudes quanto em menores. Registramos o processo de hibridação entre saguis nativos e invasores, e a formação de grupos mistos entre eles, em diversos pontos da região de Petrópolis, inclusive no interior do parque, evidenciando as consequências do processo de invasão. Concluímos que a população de Callithrix aurita no PARNASO é pequena, restrita a uma única região do parque, e parte dela possui contato com grupos de saguis invasores, ou está bem próxima deles. As espécies de saguis invasores ocorrem em alguns locais no interior do parque e por todo o seu entorno. Portanto, há uma pressão dos saguis invasores em direção ao interior do PARNASO. Diante deste processo de extinção local de uma espécie endêmica, ameaçada de extinção, e com uma restrita distribuição geográfica, alertamos para a urgente necessidade de iniciar um eficiente programa de manejo das espécies de saguis invasores, juntamente com a reintrodução de grupos de Callithrix aurita. / The Buffy-tufted-ear marmoset (Callithrix aurita) (É.Geoffroy, 1812) is an endemic species of the Atlantic Forest and endangered. Callithrix jacchus and C. penicillata are invasive species in the state of Rio de Janeiro, which compete with C. aurita for the same resources, and form hybrids. In this context, we evaluated the spatial distribution of species of marmosets (native and invasive) in and around the National Park of the Serra dos Órgãos (PARNASO), RJ, Brazil, through using the playback method, interviews, modeling occupation and detection. Furthermore, we compared the actual distribution data with the occurrence of records preceding this study. The results showed that the population of native marmosets and invaders present in the park have similar occupancy probability (0,20 and 0,22), detectability (0,22 and 0,26) and abundance (12,65 and 13,68 groups). The occupancy of the C. aurita is related to the most remote areas of the park road and less human interference, probably due to high altitude in these regions. While the occupancy of the invader marmosets is related to the proximity of the park boundaries and human interference, both at higher altitudes as for minors. We recorded the process of hybridization between native marmosets and invaders, and the formation of mixed groups among them, in various parts of Petropolis, including inside the park, showing the consequences of the invasion process. We concluded that the population of Callithrix aurita in PARNASO is small, restricted to a single region of the park, and some of it has contact with groups of marmosets invaders, or is very close to them. The species of marmoset invaders occur in some places inside the park and all its surroundings. So there is pressure from invader marmosets toward the interior of PARNASO. Given this local extinction process of an endemic species, endangered, and with a restricted range, it alerts to the urgent need to initiate an effective management program of the species of marmosets invaders among the reintroduction of Callithrix aurita groups.

<p>  </p> <p>Bats serve important ecological and economic roles in their communities. However, due to anthropogenic land use and human-introduced disease, bat populations in North America are facing unprecedented declines. To better inform conservation efforts for bat species in northeastern Indiana, I studied two aspects of bat ecology: (1) the effects of urbanization and agriculture on bat community composition in northeastern Indiana and (2) the roosting behavior of a population of state endangered/federally threatened northern long-eared bats (<em>Myotis septentrionalis</em>; hereafter northern myotis) in a restored mesic forest adjacent to a moderately sized city (Fort Wayne, IN). To study the first aspect, I deployed acoustic detectors in green spaces throughout Fort Wayne and the surrounding rural areas of Allen County. For each detector site, I compared species occupancy rates with site-specific characteristics at the plot scale (e.g., % canopy cover, midstory density) and at multiple landscape scales (e.g., % impervious cover within 1 km). Across 429 survey nights, acoustic detectors recorded calls from eight unique bat species, of which six species were abundant enough to conduct occupancy modeling. In four of the six species, measures of the amount of forest and forest edge in the landscape were included in one or more of the top models. The top models for the two other bat species, tricolored bats (<em>Perimyotis subflavus</em>) and silver-haired bats (<em>Lasionycteris noctivagans</em>), included measures of urban land cover and revealed a negative relationship between probability of occupancy and the proportion of high-density urban land in the area. The effect of habitat scale also differed between species. For example, models in the confidence set for eastern red bats (<em>Lasiurus borealis</em>) included variables associated with the plots surrounding detectors and with landscape features within 100 m of detectors. In contrast, the top models for hoary bats (<em>Lasiurus cinereus</em>) included landscape features at larger scales, within 500m and 1 km of detector sites. These findings suggest that both generalist and forest-obligate bat species in this study area selected spaces with greater levels of forested habitat. Furthermore, heavily urbanized areas were less likely to support the same levels of bat diversity as areas with forests and other green space.</p> <p>To accomplish the second aspect of my project, I captured bats in Fox Island County Park (Fort Wayne, IN) using mist-nets and affixed temperature-sensitive radio transmitters to four northern myotis individuals. I tracked these individuals back to day roosts, where I recorded roost characteristics (e.g., tree height, # of roost trees within 0.1 ha) and monitored bat skin temperatures (Tsk). I compared the characteristics of selected roosts to those of randomly assigned available trees in the same landscape to determine trends in roost selection preferences. Northern myotis in this study strongly preferred standing dead trees within a 31-ha patch of flooded forest on the northern border of Fox Island. These trees were highly exposed to solar radiation and were consistently warmer than ambient weather conditions, which suggests they may provide important thermoregulatory benefits to reproductive females and other members of the population.</p> <p>My research offers valuable information regarding resource use by bat communities in a landscape dominated by anthropogenic development. Urban areas containing large stretches of forests with trees in various stages of decay will be more likely to meet the needs of bats that would otherwise struggle in developed landscapes. The results of this study can be used to inform conservation efforts aimed at protecting populations of bats throughout Indiana and the Midwestern United States.</p>