Results 11 to 20 of about 35,277 (159)

Shearing Tooth Morphology May Allow Sharks to Access Higher Trophic Levels at Smaller Sizes. [PDF]

Ecol Evol
Predator morphology imposes limitations on prey selection due to biomechanical constraints, making some prey functionally inaccessible and thereby constraining predator trophic niches. We assessed how two key components of trophic morphology—tooth shape and body size—affect prey selectivity and trophic niche in two sympatric sharks with contrasting ...
Riverón S, Raoult V, Slip DJ, Mas F, Laporta M, Pereyra I, Silveira S, Harcourt RG.   +7 more
europepmc   +2 more sources

Modeling nature-based restoration potential across aquatic-terrestrial boundaries. [PDF]

Conserv Biol
Abstract Today, few watersheds remain untouched by global change processes arising from climate warming, impoundments, channelization, water extraction, pollution, and urbanization. The need for restoration has resulted in a myriad of interventions, generally performed at small scales, which have limited measurable impact in restoring biodiversity and
Wegscheider B, Rideout NK, Monk WA, Gray MA, Steeves R, Baird DJ.   +5 more
europepmc   +2 more sources

Phylogeography of Cold Water Soft Coral Alcyonium spp. (Anthozoa, Octocorallia: Alcyonacea) Between South America and the West Antarctic Peninsula. [PDF]

Ecol Evol
Our study on genetic diversity in Alcyonium species across the southern South American‐Antarctic region revealed significant genetic divergence, indicating long‐term persistence and adaptation to varied environmental conditions since their diversification approximately 41.1 million years ago, coinciding with the opening of the Drake Passage and the ...
Bruning P, Archaumbault P, Garrido I, de Lecea AM, Morley SA, Brante A, Ortiz P, Cárdenas L.   +7 more
europepmc   +2 more sources

Twoline Skiffia's Latency to Exit a Refuge and to Locate Food When Socialising With Invaders and Raising Temperatures. [PDF]

Ecol Evol
Native twoline skiffia's behaviour in response to increasing temperatures and coexistence with invasive guppies was assessed and results uncovered potential benefits for the native fish, including quicker emergence from shelters and more efficient food location when associating with invasive species.
Santiago-Arellano A, Alcocer J, de la Barrera E, Camacho-Cervantes M.   +3 more
europepmc   +2 more sources

Recovery and Degradation Drive Changes in the Dispersal Capacity of Stream Macroinvertebrate Communities. [PDF]

Glob Chang Biol
Freshwater ecosystems across Europe are recovering unevenly despite restoration efforts, partly due to the limited ability of many species to disperse. Using a dataset of over 1300 time series, we found that improved ecological quality often leads to gains in macroinvertebrate species with strong dispersal capacities, while degrading sites lose these ...
Cano-Barbacil C, Sinclair JS, Welti EAR, Haase P.   +3 more
europepmc   +2 more sources

Primer registro de Compsopogon caeruleus (Rhodophyta, Compsopogonales) en Córdoba (Argentina) y consideraciones sobre la presencia del género en Argentina

Lilloa, 2018
La Rhodophyta Compsopogon caeruleus es registrada por primera vez en distintos ambientes de la provincia de Córdoba. El material fue recolectado entre los años 2012 y 2016, en un lago artificial urbano, un arroyo serrano y un río con características de ...
Claudia Leyes, Alejandra Bustamante, Cecilia Giovanola, Claudia Daga   +3 more
doaj   +1 more source

Macrofauna community patterns in a Chiloe Island channel used intensely for aquaculture: the ecological status of its benthic environment

Revista Chilena de Historia Natural, 2021
Background It is known that aquaculture may produce negative environmental effects on marine ecosystems. Southern Chile is one of the most important salmon and mussel-producing areas in the world.
Eduardo Hernández-Miranda, Romina Estrada, Poliana Strange, Rodrigo Veas, M. Cristina Krautz, Renato A. Quiñones   +5 more
doaj   +1 more source

The influence of hydrological seasonality and land use and cover on the relationship between dissolved organic carbon and carbon dioxide along a karst‐draining large tropical river

Limnology and Oceanography, Volume 70, Issue 10, Page 2858-2871, October 2025.
Abstract The partial pressure of carbon dioxide (pCO2) in rivers is influenced by carbonate weathering, soil CO2, photosynthesis, and the mineralization of dissolved organic carbon (DOC). In tropical regions, elevated temperatures intensify these processes. However, their seasonal dynamics remain poorly understood in large karst‐draining rivers.
Daniel Cuevas‐Lara, Javier Alcocer, Felipe García‐Oliva, Salvador Sánchez‐Carrillo, Ismael Soria‐Reinoso, Luis A. Oseguera   +5 more
wiley   +1 more source

Estrategia marina demarcación marina levantino-balear parte IV. Descriptores del buen estado ambiental. Descriptor 1: biodiversidad evaluación inicial y buen estado ambiental [PDF]

, 2012
El descriptor 1 de la Ley 41/2010 de protección del medio marino, trasposición a la ley española de la Directiva Marco sobre la Estrategia Marina (DMEM: 2008/56/CE) dice textualmente "Se mantiene la biodiversidad.
Barcala, Elena, Bellas, Juan, de-la-Ossa-Carretero, Jose Antonio, Del-Pilar-Ruso, Yoana, Deudero, Salud, Díaz, Víctor, Farriols, Maria Teresa, Franco, Ignacio, García, José Enrique, García, José Enrique, Garrido, Diego, Gil de Sola, Luis, Gimenez-Casalduero, Francisca, Gomariz Castillo, Francisco José, González-Irusta, José Manuel, Lens, Santiago, Macías, David, Mas, Julio, Massutí, Enric, Moranta, Joan, Ordines, Francesc, Quetglas, Antoni, Ramos, Aranzazu, Ramos-Esplá, Alfonso A., Rodríguez, Juan Carlos, Ruiz, Juan M., Sánchez-Lizaso, José Luis, Vázquez, Mayte   +27 more
core   +1 more source

Efecto de la radiación ultravioleta sobre los ecosistemas acuáticos [PDF]

, 1998
Hasta hace poco tiempo se consideraba que la radiación ultravioleta carecía de importancia como factor ambiental en los ecosistemas acuáticos, ya que se suponía que se absorbía totalmente en los primeros centímetros de la columna de agua.
Cravero, W.R., Helbling, W., Villafane, V., Zagarese, H.E.   +3 more
core