نتایج جستجو برای: iii wet meadows ecological groups

تعداد نتایج: 1088247  

2015
Leonardo Ruiz-Montoya Ryan J Lowe Gary A Kendrick

BACKGROUND Seagrasses are clonal marine plants that form important biotic habitats in many tropical and temperate coastal ecosystems. While there is a reasonable understanding of the dynamics of asexual (vegetative) growth in seagrasses, sexual reproduction and the dispersal pathways of the seeds remain poorly studied. Here we address the potential for a predominantly clonal seagrass, P. austra...

Journal: :Ecology 2011
F Tomas J M Abbott C Steinberg M Balk S L Williams J J Stachowicz

Genetic variation within and among key species can have significant ecological consequences at the population, community, and ecosystem levels. In order to understand ecological properties of systems based on habitat-forming clonal plants, it is crucial to clarify which traits vary among plant genotypes and how they influence ecological processes, and to assess their relative contribution to ec...

2007
F. Short T. Carruthers W. Dennison M. Waycott

Seagrasses, marine flowering plants, are widely distributed along temperate and tropical coastlines of the world. Seagrasses have key ecological roles in coastal ecosystems and can form extensive meadows supporting high biodiversity. The global species diversity of seagrasses is low (b60 species), but species can have ranges that extend for thousands of kilometers of coastline. Seagrass bioregi...

2003
Martin Gullström Rutger Rosenberg

Seagrasses are aquatic flowering plants that occur worldwide and may be abundant on soft and sandy bottoms along coastal margins (1). In recent decades, a decrease in aerial extension has occurred mainly along industrialized coasts. This is documented throughout many distributional areas (2) and is one reason why seagrasses are listed in the Rio-declaration (1992/93:13) as habitats worthy of pr...

2018
Esperança Gacia Teresa Buchaca Nayeli Bernal-Mendoza Ibor Sabás Enric Ballesteros Marc Ventura

Submersed aquatic plants are a key component of shallow, clear water lakes contributing to primary production and water quality. High mountain lakes are naturally fishless although invasive trout and most recently minnows have been introduced causing a major impact on fauna richness. The Pyrenean high mountain range has preserved soft-water oligotrophic boreal isoetids in their southern limit o...

Journal: :Proceedings. Biological sciences 1998
S E Williams J M Hero

Rainforest frogs are classified into nine ecological guilds based on features of reproduction, habitat use, temporal activity, microhabitat and body size. The largest ecological differences are between the microhylid frogs and the rest of the frog species. Within the non-microhylids, there are two primary groups consisting of (i) regionally endemic rainforest specialists, and (ii) a more ecolog...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Ilkka A Hanski

Demographic population dynamics, gene flow, and local adaptation may influence each other and lead to coupling of ecological and evolutionary dynamics, especially in species inhabiting fragmented heterogeneous environments. Here, I review long-term research on eco-evolutionary spatial dynamics in the Glanville fritillary butterfly inhabiting a large network of approximately 4,000 meadows in Fin...

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