Results 61 to 70 of about 44,631 (306)

Freshwater fishes of the Río de la Plata: current assemblage structure

Neotropical Ichthyology, 2022
Few studies have addressed the composition of fish assemblages of the freshwater Río de la Plata (RdlP) and have only been limited to species lists gathered over the last two centuries.
Tomás Maiztegui, Ariel Hernán Paracampo, Jorge Liotta, Eva Cabanellas, Carlos Bonetto, Darío César Colautti   +5 more
doaj   +1 more source

Global patterns in the phylogenetic structure of island mammal assemblages [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2008
Assemblage-level phylogenies carry the signature of ecological and evolutionary processes, which may provide useful information on modes of assemblage formation. We present a global-scale analysis of the emergent phylogenetic properties of mammal assemblages on islands, in which we compared the structure of 595 island assemblages with null models ...
Cardillo, Marcel, Gittleman, John L., Purvis, A.   +2 more
openaire   +3 more sources

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

FEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

Algal epiphytes of Zostera marina: Variation in assemblage structure from individual leaves to regional scale

, 2005
Data from a hierarchical study of four Zostera marina beds in Wales were used to identify the spatial scales of variation in epiphyte assemblages. There were significant within and among bed differences in assemblage structure.
Johnson, Mark, Maggs, Christine, Francis Bunker, Edwards, M., Mark P. Johnson, Christine A. Maggs, Maeve Edwards, Bunker, F.   +7 more
core   +2 more sources

Aquatic insects in subtropical streams: the role of different grassland ecosystems and local environmental descriptors [PDF]

Anais da Academia Brasileira de Ciências
Organisms can respond to environmental gradients from local to landscape features. Aquatic insects are particularly affected by watershed peculiarities due to their dependence on microhabitat conditions. However, these relationships are poorly understood
TAINARA R. MENNA-BARRETO, ANA EMÍLIA SIEGLOCH, SANDRO SANTOS, TIAGO G. DOS SANTOS, MARCOS ANDRÉ P. VELLOSO, MARCIA REGINA SPIES   +5 more
doaj   +1 more source

Scales of spatiotemporal variation in macroinvertebrate assemblage structure in monsoonal streams: The importance of season

, 2012
We assessed the relative importance of different scales of spatial and temporal variability on benthic macroinvertebrate assemblage structure in six unpolluted streams in monsoonal Hong Kong using ordination and complementary multivariate analyses.
Leung, ASL, Li, AOY, Dudgeon, D
core   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

FEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source

Effects of reef proximity on the structure of fish assemblages of unconsolidated substrata. [PDF]

PLoS ONE, 2012
Fish assemblages of unconsolidated sedimentary habitats on continental shelves are poorly described when compared to those of hard substrata. This lack of data restricts the objective management of these extensive benthic habitats.
Arthur L Schultz, Hamish A Malcolm, Daniel J Bucher, Stephen D A Smith   +3 more
doaj   +1 more source

The effect of arsenic on the structure and composition of stream hyphomycetes assemblages

Anais da Academia Brasileira de Ciências, 2022
Aquatic hyphomycetes are fungi with a fundamental ecological role in forested streams. These organisms are responsible for cycling of nutrients in aquatic environments. However, their structure and composition can be affected when exposed to certain pollutants. Arsenic (As) is a trace element with high toxicity for the aquatic biota.
EMANUEL C. BERTOL, CRISTIANE BIASI, RAFAEL C. LOUREIRO, ALBANIN A. MIELNICZKI-PEREIRA, ROZANE M. RESTELLO, LUIZ U. HEPP   +5 more
openaire   +5 more sources

Seasonal variation of biodiversity and assemblage structure in freshwater nematodes

, 2005
Michiels IC, Traunspurger W. Seasonal variation of biodiversity and assemblage structure in freshwater nematodes. Archiv für Hydrobiologie. 2005;163(2):183-194.In a three-year field study we determined the seasonal and annual variation of abundance ...
Michiels, IC, Traunspurger, Walter
core   +1 more source