Marine Ecology Progress Series 224:21
... group abundance and evaluate their association with oceanographic features. Results showed that the main sessile components of the landscape throughout the region were kelps (16%) and crustose algae (48%) in the low intertidal zone, while mussels beds (30%) and corticated algae (32%) dominated the m ...
... group abundance and evaluate their association with oceanographic features. Results showed that the main sessile components of the landscape throughout the region were kelps (16%) and crustose algae (48%) in the low intertidal zone, while mussels beds (30%) and corticated algae (32%) dominated the m ...
The assembly and disassembly of ecological networks in a changing world
... delicate balance of nature. It has already caused an unprecedented number of extinctions, and the consequent damage to ecosystem structure and functioning has prompted many to suggest that we are currently witnessing the sixth mass extinction in the history of the Earth. The main big challenge for e ...
... delicate balance of nature. It has already caused an unprecedented number of extinctions, and the consequent damage to ecosystem structure and functioning has prompted many to suggest that we are currently witnessing the sixth mass extinction in the history of the Earth. The main big challenge for e ...
Understanding Rangeland Biodiversity
... Rangelands is a broader term than grasslands, including regions where woody vegetation is dominant; moreover, it is a term common in texts looking at land from the viewpoint of livestock production. Grasslands are just that, and the term has a more biological emphasis1. Some of the ecological litera ...
... Rangelands is a broader term than grasslands, including regions where woody vegetation is dominant; moreover, it is a term common in texts looking at land from the viewpoint of livestock production. Grasslands are just that, and the term has a more biological emphasis1. Some of the ecological litera ...
Ecological links between salmon, large carnivore predation, and
... recycle nutrients from salmon back into the surrounding coastal system via guano deposition (Christie and Reimchen 2005). However, no study has quantified the direct influence of salmon on scavenging bird abundance and diversity at sites that vary across a gradient of salmon population sizes. Furthe ...
... recycle nutrients from salmon back into the surrounding coastal system via guano deposition (Christie and Reimchen 2005). However, no study has quantified the direct influence of salmon on scavenging bird abundance and diversity at sites that vary across a gradient of salmon population sizes. Furthe ...
biodiversity in drylands - Food and Agriculture Organization of the
... (e.g. the distinctive sclerophyllous vegetation of the Mediterranean Basin, drylands of Southern Australia and California, Chile, Cape Floral Kingdom of South Africa, and shrublands of Australia); the cold deserts of Mongolia and Chile; the Sahara and Sahel of Africa; the arctic circle drylands; and ...
... (e.g. the distinctive sclerophyllous vegetation of the Mediterranean Basin, drylands of Southern Australia and California, Chile, Cape Floral Kingdom of South Africa, and shrublands of Australia); the cold deserts of Mongolia and Chile; the Sahara and Sahel of Africa; the arctic circle drylands; and ...
Community structure and organization of tidepools
... The physical environment of tidepools is highly regulated by the hdal cycle, although fluctuations in physical factors are smaller in tidepools, and the organisms remain submerged for the entire tidal cycle. As a result, the upper limits of the distribution of organisms are extended in tidepools and ...
... The physical environment of tidepools is highly regulated by the hdal cycle, although fluctuations in physical factors are smaller in tidepools, and the organisms remain submerged for the entire tidal cycle. As a result, the upper limits of the distribution of organisms are extended in tidepools and ...
Dung beetle communities in Madagascar
... benefits of dung beetle activity to livestock industry by reduction of gastrointestinal worms (Bryan 1973), reduction in fly numbers (Doupe 1986, Doupe et al. 1988, Tyndale–Biscoe and Hughes 1969, Ridsdill–Smith and Matthiesen 1988), and by increasing the live–weight and health of cattle in general ...
... benefits of dung beetle activity to livestock industry by reduction of gastrointestinal worms (Bryan 1973), reduction in fly numbers (Doupe 1986, Doupe et al. 1988, Tyndale–Biscoe and Hughes 1969, Ridsdill–Smith and Matthiesen 1988), and by increasing the live–weight and health of cattle in general ...
indirect effects of large herbivores on snakes in an african savanna
... Abstract. Many large mammal species are declining in African savannas, yet we understand relatively little about how these declines influence other species. Previous studies have shown that the removal of large herbivorous mammals from large-scale, replicated experimental plots results in a dramatic ...
... Abstract. Many large mammal species are declining in African savannas, yet we understand relatively little about how these declines influence other species. Previous studies have shown that the removal of large herbivorous mammals from large-scale, replicated experimental plots results in a dramatic ...
Direct and indirect effects of the introduced alga Sargassum
... luetkeana, the only native algae species that is taller than S. muticum, was not present in any of my plots at the time and because the remaining kelp species have demersal blades that typically extend less than 30 cm above the substratum, measuring light at 30 cm allowed me to isolate the effect of ...
... luetkeana, the only native algae species that is taller than S. muticum, was not present in any of my plots at the time and because the remaining kelp species have demersal blades that typically extend less than 30 cm above the substratum, measuring light at 30 cm allowed me to isolate the effect of ...
Habitat alteration and community-level effects of an exotic mussel
... Unless otherwise stated, all data are back-transformed means and standard errors (resulting in errors that are asymmetric about the mean). No attempt has been made to control experiment-wise error rates (Mead 1988, Stewart-Oaten 19951, and p-values below 0.05 were considered significant. Musculista ...
... Unless otherwise stated, all data are back-transformed means and standard errors (resulting in errors that are asymmetric about the mean). No attempt has been made to control experiment-wise error rates (Mead 1988, Stewart-Oaten 19951, and p-values below 0.05 were considered significant. Musculista ...
Investigating a Competitive Two Species System that Produces
... scale. A mathematical model, based on the model by Gilad et al. (2007) for water limited systems, represents a two species system with a tradeoff between the species. One species is an ecosystem engineer and is responsible for the increased infiltration. The other species is dependent on the first f ...
... scale. A mathematical model, based on the model by Gilad et al. (2007) for water limited systems, represents a two species system with a tradeoff between the species. One species is an ecosystem engineer and is responsible for the increased infiltration. The other species is dependent on the first f ...
Rodent abundance, stone bund density and its effects on crop
... 3.2. Seasonality, crop stage and rodent abundance Generally, rodent abundance varied seasonally during the study period (Fig. 2a & b). The seasonal changes in the abundance showed two sets of peaks each year; the highest peaks occurring early in the dry season (October to January) - hereafter calle ...
... 3.2. Seasonality, crop stage and rodent abundance Generally, rodent abundance varied seasonally during the study period (Fig. 2a & b). The seasonal changes in the abundance showed two sets of peaks each year; the highest peaks occurring early in the dry season (October to January) - hereafter calle ...
spatial variation in molluscan assemblages from coralline turfs of
... This technique correlates multivariate community data with predictor variables to determine which variable or which combination of variables best explains community structure. For these analyses, a weighted Spearman’s rank coefficient was used and the significance levels of the most important variable ...
... This technique correlates multivariate community data with predictor variables to determine which variable or which combination of variables best explains community structure. For these analyses, a weighted Spearman’s rank coefficient was used and the significance levels of the most important variable ...
Ecological Correlates of Green Turtle (Chelonia mydas)
... Algae were identified and their abundance estimated from the 10 photographs within each transect. Algae were classified as one of three types (green algae or Chlorophyta, brown algae or Phaeophyta, red algae or Rhodophyta) and one functional group (turf algae; Littler, Littler and Taylor, 1983). The ...
... Algae were identified and their abundance estimated from the 10 photographs within each transect. Algae were classified as one of three types (green algae or Chlorophyta, brown algae or Phaeophyta, red algae or Rhodophyta) and one functional group (turf algae; Littler, Littler and Taylor, 1983). The ...