Results 71 to 80 of about 2,166 (223)

SIVIM – das Online-Datenbank-System zur Vegetation der iberischen Halbinsel und der Makaronesischen Inseln [PDF]

open access: yes, 2013
SIVIM (Sistema de Información de la Vegetación Ibérica y Macaronésica) is an information system designed for capturing, hosting, editing, analyzing and outputting georeferenced plot data of Iberian and Macaronesian vegetation.
Acedo, Carmen   +7 more
core  

Root foraging strategies and niche segregation of three mediterranean shrub species

open access: yesOikos, Volume 2024, Issue 11, November 2024.
Shrubs are usually adapted to stressful environments in which soil resources are limited, and thus, roots are fundamental for their biological success. However, root measures are challenging to collect, especially in field conditions and at the individual level.
Ciro Cabal   +2 more
wiley   +1 more source

Nutrient content in tissues of Groenlandia densa, Myriophyllum spicatum and Zannichellia palustris: an attempt to understand the intercompartmental relationships in a small stream in the Middle Atlas Mountains of Morocco

open access: yesOceanological and Hydrobiological Studies
Research has long focused on the relative importance of leaves and roots as sources of nutrient supply for macrophytes, as well as the function each stream compartment plays in their growth and development. This study aims to expand the debate on aquatic
Nouri Ayoub   +3 more
doaj   +1 more source

Feasting in mussel farms fattens up snapper (Chrysophrys auratus) compared to snapper in adjacent natural habitats

open access: yesAquaculture, Fish and Fisheries, Volume 4, Issue 2, April 2024.
Abstract The presence of wild fish in and around aquaculture habitats is often assumed a response to food resources within these habitats, either from input feed, the presence of cultured species, and/or the assemblage of biofouling that naturally colonises aquaculture structures.
Lucy H. Underwood   +2 more
wiley   +1 more source

Biometry of stomata in Blechnum species (Blechnaceae) with some taxonomic and ecological implications for the ferns

open access: yesRevista de Biología Tropical, 2011
Morphological stomatal traits, such as size, form and frequency, have been subject of much literature, including their relationships with environmental factors. However, little effort have focused on ferns, and very few in the genus Blechnum.
José María Gabriel y Galán   +4 more
doaj  

Baseline for ostracod-based northwestern Pacific and Indo-Pacific shallow-marine paleoenvironmental reconstructions: ecological modeling of species distributions [PDF]

open access: yesBiogeosciences, 2019
Fossil ostracods have been widely used for Quaternary paleoenvironmental reconstructions, especially in marginal marine environments (e.g., for water depth, temperature, salinity, oxygen levels, pollution).
Y. Hong   +7 more
doaj   +1 more source

Aquatic macrophytes in Doñana protected area (SW Spain) : an overview [PDF]

open access: yes, 2006
A big portion of the Doñana protected areas corresponds to wetlands; in them aquatic macrophytes are the main primary producers and play also other important ecological functions.
Cirujano Bracamonte, Santos   +3 more
core  

Impact of microphallid trematodes on the survivorship, growth, and reproduction of an isopod (Cyathura carinata) [PDF]

open access: yes, 2005
Crustaceans are second intermediate hosts to several microphallid species (Trematoda). Some of these parasites are potentially pathogenic or manipulative. A laboratory experiment was performed to assess the impact of microphallids on the survival, growth
Ferreira, S. M.   +5 more
core   +2 more sources

Phylogeography and climate shape the quantitative genetic landscape and range‐wide plasticity of a prevalent conifer

open access: yesEcological Monographs, Volume 94, Issue 1, February 2024.
Abstract The contribution of genetic adaptation and plasticity to intraspecific phenotypic variability remains insufficiently studied in long‐lived plants, as well as the relevance of neutral versus adaptive processes determining such divergence. We examined the importance of phylogeographic structure and climate in modulating genetic and plastic ...
Jordi Voltas   +5 more
wiley   +1 more source

Feeding habits of Thoracocharax stellatus (Characiformes: Gasteropelecidae) in the upper rio Tocantins, Brazil

open access: yesNeotropical Ichthyology
The silver hatchetfish Thoracocharax stellatus is one of the approximately 200 fish species recorded for the upper rio Tocantins, in the region where it was impounded by the Serra da Mesa hydroelectric dam.
André L. Netto-Ferreira   +3 more
doaj   +1 more source

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