Results 81 to 90 of about 567,649 (186)
Acta Scientiarum: Biological Sciences, 2008 Com o objetivo de analisar as mudanças de curta duração da comunidade fitoplanctônica, em um braço do reservatório de Rosana, formado pelo ribeirão do Corvo, foram coletadas amostras de fitoplâncton total em tréplicas à subsuperfície da região pelágica ...
Sueli Train, Luzia Cleide Rodrigues
doaj +1 more source
Evaluación de la transformación del matorral del Parque Nacional de Doñana como medida de gestión y su impacto sobre la comunidad de micromamíferos. [PDF]
, 2012 Una de las principales medidas de gestión que se realizan en el Parque Nacional de Doñana dentro del Plan de manejo del lince (Lynx pardina) y del águila imperial (Aquila adalberti) es el desbroce de matorral, con ob- jeto de crear zonas abiertas de ...
Marfil Daza, C. +2 more
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Riqueza de especies en un gradiente de herbivoría de vizcachas (Lagostomus maximus Hollister)
Semiárida, 2020 Se estudiaron los efectos de la herbivoría de vizcachas sobre la riqueza de especies vegetales en un ambiente de monte semiárido, el Parque Nacional Lihue Calel, Argentina, entre los meses de mayo y diciembre de 1993.
D. Villarreal +3 more
doaj
Conservation Biology, Volume 39, Issue 1, February 2025.Abstract Nearshore seagrass, kelp, and other macroalgae beds (submerged aquatic vegetation [SAV]) are productive and important ecosystems. Mitigating anthropogenic impacts on these habitats requires tools to quantify their ecological value and the debits and credits of impact and mitigation.
Rachel E. Pausch +10 more
wiley +1 more source
Flora vascular de la Sierra Monte Grande, municipio de Charcas, San Luis Potosí, México
Botanical Sciences, 1996 La Sierra Monte Grande tiene una extensión de 41.8 km2. Se localiza en la zona norte del altiplano potosino; su flora vascular está compuesta por 74 familias, 242 géneros y 397 especies que se encuentran en los siguientes tipos de vegetación: matorrales ...
J. Antonio Reyes-Agüero +2 more
doaj +1 more source
Composição e abundância de macrófitas num troço do rio Ovelha [PDF]
, 2017 As macrófitas fluviais são um grupo relevante para a avaliação ecológica dos rios. Numa amostragem realizada num troço de 100 m do rio Ovelha, localizado a 217 m de altitude, na freguesia de Fornos, Marco de Canaveses, estudou-se a abundância ...
Andrade, Alexandre +31 more
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Evaluating the influence of marine protected areas on surf zone fish
Conservation Biology, Volume 38, Issue 6, December 2024.Abstract Marine protected areas (MPAs) globally serve conservation and fisheries management goals, generating positive effects in some marine ecosystems. Surf zones and sandy beaches, critical ecotones bridging land and sea, play a pivotal role in the life cycles of numerous fish species and serve as prime areas for subsistence and recreational fishing.
M. L. Marraffini +12 more
wiley +1 more source
Saving trees for saving bats: tree-like features as key foraging habitats for insectivorous bats in intensively farmed agricultural lands [PDF]
, 2016 The loss of natural vegetation remnants and homogenization of agricultural landscapes have detrimental effects on bat occurrence. As bats are efficient pest controllers, it is important to understand the mechanisms underlying their persistence in ...
Barreiro, Sílvia Pereira
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Politics &Policy, Volume 52, Issue 5, Page 1059-1080, October 2024.Abstract This study investigates how governance and infrastructure moderate the effect of natural resource rents on economic growth using a sample of 110 countries from 2000 to 2018. The empirical evidence is based on panel smooth transition regressions (PSTR). The nexus between economic growth and natural resources is not linear and the underlying non‐
Simplice A. Asongu +3 more
wiley +1 more source
SHILAPSe muestran los registros recabados durante las prospecciones sistemáticas llevadas a cabo con frecuencia mensual a lo largo de 2017, 2018 y 2019, en un recinto de 0,5 hectáreas, localizado en un área de media montaña (600 m.s.n.m.) del suroccidente de ...
Pedro Miguel Bernabé-Ruiz +3 more
doaj +1 more source