Results 11 to 20 of about 3,289 (212)

Predicting the response of a long-distance migrant to changing environmental conditions in winter. [PDF]

open access: yesEcol Evol
We studied effects of annual changes in abundance and availability of a marine food, common eelgrass (Zostera marina), on an arctic‐breeding, migratory goose, black brant (Brant bernicla nigricans), at a key non‐breeding site, Bahía San Quintín, Mexico.
Stillman RA   +6 more
europepmc   +2 more sources

Examining Marine Assemblages Across an Inverse Salinity Gradient. [PDF]

open access: yesMol Ecol
ABSTRACT Salinity gradients and fluctuations can create a natural ecological filter, with few species tolerating salinity above 50 practical salinity units (PSUs). We investigated how an inverse salinity gradient affected marine community diversity and composition in Shark Bay, a remote hypersaline coastal embayment in Western Australia.
Richards KE   +4 more
europepmc   +2 more sources

Temporal changes in species richness and fish composition in a submerged vegetation habitat in Veracruz, Mexico [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2017
Background. Because estuarine fish communities undergo temporal changes in abundance and species composition, the influence of environmental factors on diel and seasonal variation in the structure of a fish community was evaluated.
M. Castillo-Rivera   +2 more
doaj   +3 more sources

Changes in the morphology of widgeon grass (Ruppia maritima) with the onset of reproduction and impacts on fish assemblages at the Chandeleur Islands, LA

open access: yesFrontiers in Environmental Science, 2022
Seagrass beds are important submerged coastal habitats that support nearshore communities. Ruppia maritima (widgeon grass) is a widespread seagrass species that undergoes dramatic changes in morphology at the onset of reproduction. The goal of this study
Matthew A. Byrnes   +2 more
doaj   +1 more source

A review of plant phenolics and endozoochory. [PDF]

open access: yesEcol Evol
Phenolic compounds, vital secondary metabolites in plants, evolved to protect against UV radiation and oxidative stress during their transition to terrestrial environments. In modern plants, phenolics serve primarily as defense mechanisms against pathogens and herbivores, while also influencing seed dormancy and viability.
Krebs SA, Schummer ML.
europepmc   +2 more sources

Diversity and Variation of Epiphytic Diatoms on Ruppia maritima L., Related to Anthropogenic Impact in an Estuary in Southern Brazil

open access: yesDiversity, 2022
Knowledge about the diversity and spatiotemporal variability of epiphytic diatom communities in estuarine meadows has great relevance for coastal ecology and, thus, contributes to understanding the impact of natural and anthropogenic changes on seagrass ...
Vanessa Corrêa da Rosa   +1 more
doaj   +1 more source

Flora do Rio de Janeiro: Ruppiaceae

open access: yesRodriguésia, 2020
Resumo O presente estudo apresenta a flora de Ruppiaceae no estado do Rio de Janeiro. O trabalho tem por base a análise morfológica de materiais depositados em herbários e coletas de campo, além de dados da literatura.
Yasmin de Mello Canalli   +1 more
doaj   +1 more source

Regional Genetic Structure in the Aquatic Macrophyte Ruppia cirrhosa Suggests Dispersal by Waterbirds [PDF]

open access: yes, 2017
The evolutionary history of the genus Ruppia has been shaped by hybridization, polyploidisation and vicariance that have resulted in a problematic taxonomy. Recent studies provided insight into species circumscription, organelle takeover by hybridization,
A Marchioni-Ortu   +71 more
core   +2 more sources

The light requirements for growth and photosynthesis in seagrasses with emphasis on Texas estuaries : a literature survey [PDF]

open access: yes, 1993
During the last 20 years, seagrass communities throughout the world have experienced decreased productivity and distribution. These declines have often been attributed to decreased water transparency as a result of turbidity or shading by epiphytic algae.
Dunton, Kenneth H., Kaldy, J. E.
core   +1 more source

Observaciones sobre un coportamiento atípico de Ruppia maritima L. en una laguna costera tropical

open access: yesBotan‪ical Sciences, 1977
Ruppia marítima está presente en la Laguna de Sontecomapan durante todo el año. Su distribución en la laguna parece depender de la acción conjunta de varios factores. Entre ellos, turbidez, corrientes y pH actúan como limitantes.
Martha González-Gutiérrez
doaj   +1 more source

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