Estuarine Benthic Algae
... species in all other groups combined (Lee, 1999). Although red algae are extremely speciose in tropical and subtropical regions, their biomass is low relative to that in temperate areas. The most common forms of red algae in the tropics include crustose members of the family Corallinaceae as well as ...
... species in all other groups combined (Lee, 1999). Although red algae are extremely speciose in tropical and subtropical regions, their biomass is low relative to that in temperate areas. The most common forms of red algae in the tropics include crustose members of the family Corallinaceae as well as ...
Ontogenetic variation in the diurnal food and habitat
... exotic mosquitofish, Gambusia holbrooki, showed significant ontogenetic variation in the use of food and space. Small gudgeons were generally associated with surface and benthic habitats, then restricted their distribution to benthic habitats at a size of approximately 24 mm (standard length). The o ...
... exotic mosquitofish, Gambusia holbrooki, showed significant ontogenetic variation in the use of food and space. Small gudgeons were generally associated with surface and benthic habitats, then restricted their distribution to benthic habitats at a size of approximately 24 mm (standard length). The o ...
Atkinsonetal.Ecosystems.2014
... from mussels. Nitrogen is a key element that often limits the productivity of streams (Dodds 1997). Previous results at our study site suggest N limitation, which is typical of streams of the Ouachita Mountains and Upper Gulf Coastal Plain (Atkinson and others 2013), thus we predicted the ecosystem ...
... from mussels. Nitrogen is a key element that often limits the productivity of streams (Dodds 1997). Previous results at our study site suggest N limitation, which is typical of streams of the Ouachita Mountains and Upper Gulf Coastal Plain (Atkinson and others 2013), thus we predicted the ecosystem ...
algae, calcified
... Calcareous red algae have left behind a fossil record that extends back to Precambrian times (over million years ago). Thus, their evolutionary history exceeds that of most extant organisms. During the Paleozoic era (– million years ago), a variety of calcified articulated and crustose taxa ...
... Calcareous red algae have left behind a fossil record that extends back to Precambrian times (over million years ago). Thus, their evolutionary history exceeds that of most extant organisms. During the Paleozoic era (– million years ago), a variety of calcified articulated and crustose taxa ...
journal.pone.0170
... species like Arctic charr needs refuges in deep lakes, as their temperature preference is a trait that seems relatively fixed throughout their distribution [17–18]. Thus, they potentially will be outcompeted by species like whitefish and/or brown trout at their southern edge of distribution (e.g. [1 ...
... species like Arctic charr needs refuges in deep lakes, as their temperature preference is a trait that seems relatively fixed throughout their distribution [17–18]. Thus, they potentially will be outcompeted by species like whitefish and/or brown trout at their southern edge of distribution (e.g. [1 ...
amphipods are strong interactors in the food web of a brown
... demonstration of mechanisms involved in cycling and quantitative evidence that salmonderived nutrients actually increase 1o and 2o productivity are elusive (Schindler et al 2003). Nonetheless, Kline et al. (1993) and Chaloner et al. (2002) among others have argued that MDN in coastal rivers may sust ...
... demonstration of mechanisms involved in cycling and quantitative evidence that salmonderived nutrients actually increase 1o and 2o productivity are elusive (Schindler et al 2003). Nonetheless, Kline et al. (1993) and Chaloner et al. (2002) among others have argued that MDN in coastal rivers may sust ...
Overview of temporary ponds in the Mediterranean region : Threats
... They support a diversity of species including vascular plants, amphibians, many microorganisms and macro invertebrates some of which are endemic. Temporary ponds are isolated habitats, which are also important environments for many migratory birds (Grillas et al., 2004a; Madhyastha et al., 2000). Th ...
... They support a diversity of species including vascular plants, amphibians, many microorganisms and macro invertebrates some of which are endemic. Temporary ponds are isolated habitats, which are also important environments for many migratory birds (Grillas et al., 2004a; Madhyastha et al., 2000). Th ...
University of Groningen Ecology of Estuarine Macrobenthos
... production and returns nutrients to the deeper water layers. It may take years before these nutrients can be utilized by photoautotrophs again. In estuarine systems, however, pelagic-benthic links are not only quantitatively more important, but also qualitatively different, since the benthos can be ...
... production and returns nutrients to the deeper water layers. It may take years before these nutrients can be utilized by photoautotrophs again. In estuarine systems, however, pelagic-benthic links are not only quantitatively more important, but also qualitatively different, since the benthos can be ...
Effects of low flow on dwarf galaxias and their habitat in the Wairau
... fish grew larger. He also noted that the stomachs were fullest in the afternoon, suggesting that dwarf galaxias are predominantly diurnal feeders. In common with some other members of the Galaxiidae, adult dwarf galaxias are able to burrow into gravel, presumably to seek refuge from predators and ex ...
... fish grew larger. He also noted that the stomachs were fullest in the afternoon, suggesting that dwarf galaxias are predominantly diurnal feeders. In common with some other members of the Galaxiidae, adult dwarf galaxias are able to burrow into gravel, presumably to seek refuge from predators and ex ...
limiting resources and the regulation of diversity in phytoplankton
... diversity of phytoplankton communities are often greater than the number of measured limiting resources even when conditions are apparently close to equilibrium. This paradox has been evaluated both theoretically and experimentally (Reynolds 1984, Grover 1990, Sommer 1993, 1995, Siegal 1998). Period ...
... diversity of phytoplankton communities are often greater than the number of measured limiting resources even when conditions are apparently close to equilibrium. This paradox has been evaluated both theoretically and experimentally (Reynolds 1984, Grover 1990, Sommer 1993, 1995, Siegal 1998). Period ...
CONSUMERS - Lubchenco/Menge Lab
... Levings, 1981; 1983; Gaines, 1983; 1985). Field observations indicate that the damselfish defend loosely-defined subtidal territories against all other fishes, but will move well into the low zone to forage at high tide. The wrasses defend dens under boulders or in deep crevices in the shallow subti ...
... Levings, 1981; 1983; Gaines, 1983; 1985). Field observations indicate that the damselfish defend loosely-defined subtidal territories against all other fishes, but will move well into the low zone to forage at high tide. The wrasses defend dens under boulders or in deep crevices in the shallow subti ...
Regional environments, lifehistory patterns, and
... augment cuticular resistance to water loss, and to a presumed capacity in dormant individuals for water vapour uptake from unsaturated air (Crawford, ...
... augment cuticular resistance to water loss, and to a presumed capacity in dormant individuals for water vapour uptake from unsaturated air (Crawford, ...
Heritage 386 D.C. FOR
... (A cooperative venture to restore the spring run may become an early target of opportunity for NHI's habitat-oriented Aquatic Diversity Management Area Program, of which the listing agencies have been previously apprised.) The reprieve is, however, conditional. NHI is prepared to file the petition f ...
... (A cooperative venture to restore the spring run may become an early target of opportunity for NHI's habitat-oriented Aquatic Diversity Management Area Program, of which the listing agencies have been previously apprised.) The reprieve is, however, conditional. NHI is prepared to file the petition f ...
i FLATWORM PREDATION ON JUVENILE FRESHWATER
... transformed juvenile mussels excyst and fall into a community of organisms at the bottom of the tanks. The juvenile mussels are vulnerable to a variety of invertebrate predators at the hatchery, including cyclopoid copepods, aquatic insects, water mites, protists, and flatworms (Zaret, 1980; Thorp ...
... transformed juvenile mussels excyst and fall into a community of organisms at the bottom of the tanks. The juvenile mussels are vulnerable to a variety of invertebrate predators at the hatchery, including cyclopoid copepods, aquatic insects, water mites, protists, and flatworms (Zaret, 1980; Thorp ...
Migratory Fishes as Material and Process Subsidies in Riverine Ecosystems
... by briefly summarizing the major categories of migratory patterns in freshwater fishes, ranging from relatively short-distance movements across habitats to remarkable long-distance migrations of up to thousands of kilometers. We then make the distinction between two fundamentally different types of ...
... by briefly summarizing the major categories of migratory patterns in freshwater fishes, ranging from relatively short-distance movements across habitats to remarkable long-distance migrations of up to thousands of kilometers. We then make the distinction between two fundamentally different types of ...
Spatial, temporal and ontogenetic patterns of habitat use by coral
... cover of each substratum type, substratum diversity and complexity). Sixty-four labrid species were found to use these habitat zones In 5 surveys conducted over 3 yr. Thirty-eight species (1804 individuals) were recorded in a single survey (area, 13500 m2),of which 8 were abundant (n > 5 % of total ...
... cover of each substratum type, substratum diversity and complexity). Sixty-four labrid species were found to use these habitat zones In 5 surveys conducted over 3 yr. Thirty-eight species (1804 individuals) were recorded in a single survey (area, 13500 m2),of which 8 were abundant (n > 5 % of total ...
The roles of productivity and ecosystem size in determining food
... majority of free-living terrestrial diversity in this system and include consumers at all trophic levels. While certainly there are many taxa not captured via these three methodologies, it was not feasible to comprehensively inventory biodiversity at all islets. We thus assume that changes consisten ...
... majority of free-living terrestrial diversity in this system and include consumers at all trophic levels. While certainly there are many taxa not captured via these three methodologies, it was not feasible to comprehensively inventory biodiversity at all islets. We thus assume that changes consisten ...
neinvasives.com
... HABITAT – Shallow waters of freshwater streams and rivers; sunny open areas with stable water flows of moderate to high current; and below outlets of lakes and reservoirs. LOCATION IN NEBRASKA – Not known to exist in Nebraska. Found primarily in streams in Western states and some in the Northeastern ...
... HABITAT – Shallow waters of freshwater streams and rivers; sunny open areas with stable water flows of moderate to high current; and below outlets of lakes and reservoirs. LOCATION IN NEBRASKA – Not known to exist in Nebraska. Found primarily in streams in Western states and some in the Northeastern ...
A synthesis of subdisciplines: predator–prey interactions, and
... species differ in their assimilation efficiencies cj, the most successful consumer is the species that most efficiently converts resources into new biomass, ultimately outcompeting other species because it achieves a high population density. This leads to a positive effect of consumer diversity m on ...
... species differ in their assimilation efficiencies cj, the most successful consumer is the species that most efficiently converts resources into new biomass, ultimately outcompeting other species because it achieves a high population density. This leads to a positive effect of consumer diversity m on ...
Across ecosystem comparisons of size structure: methods
... The entity (e.g. individual, population, species, or size-class) for which size is quantified has implications for conceptualising, defining and quantifying size structure, and for interpreting the ecological meaning of the resultant patterns. Body size as an attribute of individuals is relatively una ...
... The entity (e.g. individual, population, species, or size-class) for which size is quantified has implications for conceptualising, defining and quantifying size structure, and for interpreting the ecological meaning of the resultant patterns. Body size as an attribute of individuals is relatively una ...
Full text in pdf format
... ABSTRACT: Between 1977 and 1992, semi-quantitative samples of macroinvertebrates were taken at fortnightly intervals from the Thames Estuary (UK) utilising the cooling water intake screens of West Thurrock power station. Samples were taken for 4 h over low water, the abundances of invertebrates reco ...
... ABSTRACT: Between 1977 and 1992, semi-quantitative samples of macroinvertebrates were taken at fortnightly intervals from the Thames Estuary (UK) utilising the cooling water intake screens of West Thurrock power station. Samples were taken for 4 h over low water, the abundances of invertebrates reco ...
Redalyc.Independent effects of grazing and tide pool habitats on the
... experiment on an intertidal rocky shore in Fildes Bay, King George Island, in which the effect of the dominant grazer Nacella polaris on the structure of benthic periphyton communities was compared between emergent rock and tide pool habitats. Also, we determined the spatial variation in density, we ...
... experiment on an intertidal rocky shore in Fildes Bay, King George Island, in which the effect of the dominant grazer Nacella polaris on the structure of benthic periphyton communities was compared between emergent rock and tide pool habitats. Also, we determined the spatial variation in density, we ...
2014, vol 24 - Department of Biological Sciences
... Manuscripts from the research projects in this program have been published in the annual volume “Dartmouth Studies in Tropical Ecology” since 1989. Copies are held in the Dartmouth library and in Costa Rica at the San Jose office of the Organization for Tropical Studies (OTS/OET), at the OTS field s ...
... Manuscripts from the research projects in this program have been published in the annual volume “Dartmouth Studies in Tropical Ecology” since 1989. Copies are held in the Dartmouth library and in Costa Rica at the San Jose office of the Organization for Tropical Studies (OTS/OET), at the OTS field s ...
Impacts of Warming on the Structure and Functioning of Aquatic
... O’Gorman and Emmerson, 2010; Rossberg, 2012; but see Henri and Van Veen, 2011). Thus, by characterising the size of organisms and the environmental temperature, we should be able to capture a large amount of the ecologically meaningful variation of a system within a small number of dimensions. That ...
... O’Gorman and Emmerson, 2010; Rossberg, 2012; but see Henri and Van Veen, 2011). Thus, by characterising the size of organisms and the environmental temperature, we should be able to capture a large amount of the ecologically meaningful variation of a system within a small number of dimensions. That ...
CBNERR Research Bibliography
... components that are sensitive to changes in biological and physical driving factors. Static and dynamic modeling frameworks provide an integrative way to study complex hydrodynamic and biogeochemical processes in linked estuarine habitats. In this study we describe a spatial simulation model develop ...
... components that are sensitive to changes in biological and physical driving factors. Static and dynamic modeling frameworks provide an integrative way to study complex hydrodynamic and biogeochemical processes in linked estuarine habitats. In this study we describe a spatial simulation model develop ...
River ecosystem
The ecosystem of a river is the river viewed as a system operating in its natural environment, and includes biotic (living) interactions amongst plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions.River ecosystems are prime examples of lotic ecosystems. Lotic refers to flowing water, from the Latin lotus, washed. Lotic waters range from springs only a few centimeters wide to major rivers kilometers in width. Much of this article applies to lotic ecosystems in general, including related lotic systems such as streams and springs. Lotic ecosystems can be contrasted with lentic ecosystems, which involve relatively still terrestrial waters such as lakes and ponds. Together, these two fields form the more general study area of freshwater or aquatic ecology. The following unifying characteristics make the ecology of running waters unique from that of other aquatic habitats. Flow is unidirectional. There is a state of continuous physical change. There is a high degree of spatial and temporal heterogeneity at all scales (microhabitats). Variability between lotic systems is quite high. The biota is specialized to live with flow conditions.↑ ↑ ↑ ↑