Results 31 to 40 of about 229,090 (184)

The collective application of shorebird tracking data to conservation

open access: yesConservation Biology, EarlyView.
Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison   +71 more
wiley   +1 more source

Dinâmica do estrato herbáceo de uma vegetação de caatinga do Sertão de Pernambuco sob intensidade de uso por caprinos. [PDF]

open access: yes, 2012
Uma pastagem nativa de caatinga foi submetida a várias intesidades de uso (IU) por caprinos (1981-84), para verificar o efeito delas na degradação da vegetação. A pesquisa envolveu três lU variando de 1 cabra/1 ha para 1 cabra/3 ha, além da exclusão (sem
ALBUQUERQUE, S. G. de   +3 more
core  

Novas espécies de Callia Audinet-Serville da América do Sul (Cerambycidae, Lamiinae, Calliini) [PDF]

open access: yes, 2010
Espécies novas descritas de Callia procedentes da Venezuela: C. bordoni sp. nov. (Zulia); C. apyra sp. nov. e C. pallida sp. nov., ambas de Mérida; C. terminata (Falcón), C. variabilis (Táchira, Mérida); do Brazil: C. catuaba (Minas Gerais); C.
GALILEO, Maria Helena M.   +2 more
core   +3 more sources

Monitoring small‐scale fisheries through participatory, app‐based surveys in the tropical archipelago of São Tomé and Príncipe

open access: yesConservation Science and Practice, EarlyView.
Small Island Developing States have limited capacity to monitor Small Scale Fisheries, despite their high dependence on marine resources. Participatory monitoring of Small Scale Fisheries can fill data gaps while integrating resource users into fisheries management.
Guillermo Porriños   +17 more
wiley   +1 more source

Algumas espécies novas da Bolívia, e referência a três espécies de Haemagogus

open access: yesMemorias do Instituto Oswaldo Cruz, 1943
No estudo do material da Bolívia, cinco novas espécies são descritas: Taeniorhynchus (Rhynchotaenia) nitens [feminino], Psorophora (Janthinosoma) circumflava [feminino], Psorophora (Janthinosoma) melanota [masculino], Psorophora (Grabhamia) dimidiata ...
N. L. Cerqueira
doaj   +1 more source

Urbanization Intensity, Vegetation Cover and Plant Vigor Affects Stem Galls Occurrence and Abundance in a Widely Distributed Ruderal Tropical Plant

open access: yesBiotropica, Volume 58, Issue 2, March 2026.
In this study, we demonstrate that urbanization intensity reduces the abundance of stem galls on Turnera subulata, while increased vegetation cover and plant vigor promote higher occurrence and abundance. These findings highlight the importance of native vegetation in sustaining specialized insect‐plant interactions and provide evidence that plant ...
Luziene Seixas   +4 more
wiley   +1 more source

Vulnerability of marine megafauna to global at‐sea anthropogenic threats

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened ...
Michelle VanCompernolle   +309 more
wiley   +1 more source

Contribuição para o conhecimento dos gêneros Caperonia St. Hil., stigmaphyllon A. Juss. e Vochysia Juss [PDF]

open access: yes, 1978
Três espécies novas são descritas, pertencentes aos gêneros Caperonia St. Hil., Stigmaphyllon e Vochysia Juss. É estudada a morfologia da parte vegetativa aérea, incluindo-se a anatomia foliar, a inflorescência, flor, grão de pólen, fruto e ...
Alves, José Luiz Hamburgo   +1 more
core  

Climate Change Will Resize and Reshape Plant–Hummingbird Networks in the Atlantic Forest

open access: yesDiversity and Distributions, Volume 32, Issue 1, January 2026.
ABSTRACT Aim To assess how climate change could reshape plant–hummingbird interaction networks in the Atlantic Forest by predicting shifts in species co‐occurrence and evaluating changes in network structure. Location Atlantic Forest, South America.
Alejandro Restrepo‐González   +6 more
wiley   +1 more source

Análise da dinâmica de crescimento em espécies florestais por grupo ecológico na Flona do Tapajós. [PDF]

open access: yes, 2011
Os trabalhos relacionados à composição florística e sua respectiva dinâmica na floresta atualmente despertam o interesse de várias áreas da pesquisa por sugerirem novas espécies visando a melhor sustentabilidade do sistema.
GOUVEIA, D. M.   +3 more
core  

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