Results 41 to 50 of about 114 (95)

Temporal Dynamics of a Neotropical Plant‐Hummingbird Interaction Network

open access: yesAustral Ecology, Volume 50, Issue 7, July 2025.
Using an unprecedented sampling effort we evaluated network structure and dynamics of plant‐hummingbird interactions over 1 year in the Brazilian hyperdiverse Campos Rupestres. Network structure presented remarkable temporal change, showing that tropical communities can also be strongly influenced by climate.
Steffani N. P. Queiroz   +7 more
wiley   +1 more source

Tropical Land‐Use Change Disrupts Zeta‐Diversity Across Taxa

open access: yesGlobal Change Biology, Volume 31, Issue 5, May 2025.
We studied birds, dung beetles, and orchids across natural and human‐transformed habitats in the Colombian Andes to understand how land‐use change affects biodiversity. We found that deforestation simplifies ecological communities and reduces both rare and widespread species, especially orchids.
Edicson Parra‐Sanchez   +14 more
wiley   +1 more source

ÍNDICES BIÓTICOS PARA AVALIAÇÃO DE QUALIDADE DE ÁGUA DE RIOS TROPICAIS – SÍNTESE DO CONHECIMENTO E ESTUDO DE CASO: BACIA DO ALTO RIO DOCE

open access: yesRevista Brasileira de Ciências Ambientais, 2018
Este trabalho apresenta avaliações de qualidade das águas da bacia de contribuição do reservatório de Peti, localizado no alto Rio Doce, em 2014, por meio dos índices saprobiótico Minas-Rio (ISMR) e biological monitoring working party score system ...
Marilia Vilela Junqueira   +6 more
doaj   +1 more source

Andean grassland stability across spatial scales increases with camelid grazing intensity despite biotic homogenization

open access: yesJournal of Ecology, Volume 113, Issue 4, Page 931-942, April 2025.
Our results emphasize the necessity of considering the complex influences of grazing intensity on diversity and stability at different spatial scales for the effective management of Andean grasslands. Abstract Intensive land use and changing environmental conditions are reshaping the biodiversity, functioning and stability of local Andean grassland ...
Ana Patricia Sandoval‐Calderon   +5 more
wiley   +1 more source

Examining the structure of plant–lemur interactions in the face of imperfect knowledge

open access: yesConservation Biology, Volume 39, Issue 1, February 2025.
Abstract Biotic interactions, such as plant–animal seed dispersal mutualisms, are essential for ecosystem function. Such interactions are threatened by the possible extinction of the animal partners. Using a data set that includes plant–lemur interactions across Madagascar, we studied the current state of knowledge of these interactions and their ...
Jadelys Tonos   +6 more
wiley   +1 more source

Land use history and landscape forest cover determine tropical forest recovery

open access: yesJournal of Applied Ecology, Volume 61, Issue 10, Page 2365-2381, October 2024.
Both a higher land use intensity and fragmented forest landscape decreases the speed of forest recovery, indicating that human actions and landscape transformation shape the course of succession. Restoration in fragmented forest landscapes through natural regeneration is more suitable in areas with low previous land use intensity, higher forest ...
Iris Hordijk   +8 more
wiley   +1 more source

Hábitat fluvial e insectos indicadores del estado de conservación en la cuenca alta del río turbio, en el Estado Lara, Venezuela

open access: yesBioagro, 2013
Las fuertes perturbaciones en la cuenca del río Turbio (vertiente andina del río Orinoco en Venezuela) requieren la evaluación de sus afluentes para contribuir con el manejo adecuado de los recursos hidrobiológicos.
Margenny Barrios, Douglas Rodríguez
doaj  

Estatus ecológico del bentos de la zona costera del Golfo de Arauco: patrones espacio-temporales de índices bióticos de la macrofauna

open access: yesGayana
La biodiversidad de los ambientes costeros es afectada por actividades antropogénicas locales y junto con el cambio climático, pueden alterar estructuras comunitarias, ciclos biogeoquímicos y su funcionamiento ecosistémico.
Patricio Torres-Ramírez   +7 more
doaj  

Biología Acuática 34

open access: yesBiología Acuática, 2020
Este número contiene: Efecto del establecimiento del alga invasora Didymosphenia geminata sobre la abundancia de macrocrustáceos en el Río Limay superior, Patagonia, Argentina // Estructura de la taxocenosis de diatomeas y su relación con variables ...
María Cristina Claps
doaj  

CALIDAD DE AGUA DEL RÍO TRES DE MAYO EN EL PARQUE NACIONAL TINGO MARÍA, SEGÚN LOS ÍNDICES H’, BMWP/Col. y NSF

open access: yesREBIOL, 2021
Se determinó la calidad del agua del río Tres de Mayo del Parque Nacional Tingo María mediante macroinvertebrados acuáticos e índices bióticos.
Yulisa Medina Silva   +2 more
doaj  

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