Habitat complexity: approaches and future directions
... role of habitat complexity in influencing species distributions (McCoy & Bell, 1991; Sanson et al., 1995). A second reason is that habitat complexity is often defined using a range of terms such as ‘‘substrate heterogeneity’’ (Menge et al., 1985), ‘‘topographical complexity’’ (Walters & Wethey, 1996 ...
... role of habitat complexity in influencing species distributions (McCoy & Bell, 1991; Sanson et al., 1995). A second reason is that habitat complexity is often defined using a range of terms such as ‘‘substrate heterogeneity’’ (Menge et al., 1985), ‘‘topographical complexity’’ (Walters & Wethey, 1996 ...
Frequencies, Microclimate and Root Properties for
... Desert. The populations studied were found on north-facing and south-facing slopes, whose microclimates were quantified at the two solstices and an equinox. To help interpret influences of air temperature and water availability, relative ground cover was additionally examined for north-facing slopes ...
... Desert. The populations studied were found on north-facing and south-facing slopes, whose microclimates were quantified at the two solstices and an equinox. To help interpret influences of air temperature and water availability, relative ground cover was additionally examined for north-facing slopes ...
b 2 - Videolectures
... Population level: Introduction of a spatially explicit model for a plant population, applying it to pattern formation phenomena along environmental ...
... Population level: Introduction of a spatially explicit model for a plant population, applying it to pattern formation phenomena along environmental ...
. Red Swamp Crayfish, Procambarus clarkii Overview Overview
... changes in aquatic food webs. They are omnivorous, with food sources including detritus, macroinvertebrates, green plants, juvenile fish and amphibians, and have been implicated in species declines in some areas. Extensive burrowing can cause increases in turbidity which reduce light penetration for ...
... changes in aquatic food webs. They are omnivorous, with food sources including detritus, macroinvertebrates, green plants, juvenile fish and amphibians, and have been implicated in species declines in some areas. Extensive burrowing can cause increases in turbidity which reduce light penetration for ...
Stream Crossings - The Nature Conservancy
... become clogged with debris (e.g., logs, branches, trash), which might exacerbate flooding, create barriers to movement and increase maintenance costs.11 Many crossings are constructed in headwaters or small streams. Cumulatively, small streams make up the majority of stream length within a watershed ...
... become clogged with debris (e.g., logs, branches, trash), which might exacerbate flooding, create barriers to movement and increase maintenance costs.11 Many crossings are constructed in headwaters or small streams. Cumulatively, small streams make up the majority of stream length within a watershed ...
Document
... Only nitrogen fixers can use atmospheric supply directly Blue-green algae, soil bacteria, bacteria of legume roots, some fungi = energy-demanding process N2 reduced to ammonia (NH3) ...
... Only nitrogen fixers can use atmospheric supply directly Blue-green algae, soil bacteria, bacteria of legume roots, some fungi = energy-demanding process N2 reduced to ammonia (NH3) ...
BAY-DELTA HEARINGS
... confidence which can be placed in predicting biological benefits which may be achieved through different management actions. The present level of uncertainty regarding the quantification or evaluation of specific benefits derived from various actions should not preclude development and implementatio ...
... confidence which can be placed in predicting biological benefits which may be achieved through different management actions. The present level of uncertainty regarding the quantification or evaluation of specific benefits derived from various actions should not preclude development and implementatio ...
Tricas 1989b
... oceans, feed conspicuously on corals, and can be observed at close range for long periods . Individuals are conspicuous and usually identifiable by unique features in their color patterns, and are site attached in territories or stable home ranges (Reese 1975, Sutton 1985, Tricas 1985, 1989) . Coral ...
... oceans, feed conspicuously on corals, and can be observed at close range for long periods . Individuals are conspicuous and usually identifiable by unique features in their color patterns, and are site attached in territories or stable home ranges (Reese 1975, Sutton 1985, Tricas 1985, 1989) . Coral ...
Invasive red lionfish Pterois volitans blow directed jets of water at
... their degree of success in invaded communities. Often, biotic invasions are facilitated by specific traits or behaviors that allow invasive species to avoid predators or parasites, out-compete native species, or be particularly efficient predators (Holway & Suarez 1999). Here we describe a unique fe ...
... their degree of success in invaded communities. Often, biotic invasions are facilitated by specific traits or behaviors that allow invasive species to avoid predators or parasites, out-compete native species, or be particularly efficient predators (Holway & Suarez 1999). Here we describe a unique fe ...
Status of Vegetation Structure and Composition within the Habitat of
... within its habitat are highly sensitive to changes in hydrologic regimes. Thus, to ensure that the impacts of Everglades restoration projects do not impede the survival and continued existence of sparrows in their habitat, the C-111 Spreader Canal Western project embraces regular monitoring of the s ...
... within its habitat are highly sensitive to changes in hydrologic regimes. Thus, to ensure that the impacts of Everglades restoration projects do not impede the survival and continued existence of sparrows in their habitat, the C-111 Spreader Canal Western project embraces regular monitoring of the s ...
pdf file
... aerate - To add oxygen to water or soil. aeration zone - The zone immediately below the land surface where the pores contain both water and air, but are not totally saturated with water. Plant roots can capture the moisture passing through this zone, but it cannot provide water for wells. Also know ...
... aerate - To add oxygen to water or soil. aeration zone - The zone immediately below the land surface where the pores contain both water and air, but are not totally saturated with water. Plant roots can capture the moisture passing through this zone, but it cannot provide water for wells. Also know ...
Freshwater Mussels of Michgian - Michigan Natural Features Inventory
... aquatic ecosystems. They play a significant ecological role in both rivers and lakes. Live individuals and empty shells provide habitat for aquatic insects. Empty shells also provide habitat for crayfish. Unionid mussels often constitute the highest percentage of biomass relative to other benthic st ...
... aquatic ecosystems. They play a significant ecological role in both rivers and lakes. Live individuals and empty shells provide habitat for aquatic insects. Empty shells also provide habitat for crayfish. Unionid mussels often constitute the highest percentage of biomass relative to other benthic st ...
usinggrasscarp3600
... fish food rather than the plants they were intended to control. Grass carp grow rapidly under favorable conditions. Food consumption rates are influenced by temperature, age and size of fish, dissolved oxygen and plant species. Grass carp consume vegetation intermittently at temperatures as low as 3 ...
... fish food rather than the plants they were intended to control. Grass carp grow rapidly under favorable conditions. Food consumption rates are influenced by temperature, age and size of fish, dissolved oxygen and plant species. Grass carp consume vegetation intermittently at temperatures as low as 3 ...
CIESMW orkshop S eries Fishing down the - ICM-CSIC
... Gislason et al., 2000; Cochrane, 2000; Pitcher, 2000a; Coelho, this volume). Within this frame work, the adoption of a variety of “ecosystem” objectives, indicators and reference points, that trigger management actions (e.g. Gislason et al., 2000), becomes a necessity. Yet, though the full implicati ...
... Gislason et al., 2000; Cochrane, 2000; Pitcher, 2000a; Coelho, this volume). Within this frame work, the adoption of a variety of “ecosystem” objectives, indicators and reference points, that trigger management actions (e.g. Gislason et al., 2000), becomes a necessity. Yet, though the full implicati ...
Pages 16-144 - South Atlantic Fishery Management Council
... level up to mean high water. S. alterniflora exhibits three growth forms, tall, medium and short. The tall form dominates the immediate shorelines of the tidal stream banks at an elevation from mean tide level up to slightly below the mean high tide level and to a horizontal depth shoreward of about ...
... level up to mean high water. S. alterniflora exhibits three growth forms, tall, medium and short. The tall form dominates the immediate shorelines of the tidal stream banks at an elevation from mean tide level up to slightly below the mean high tide level and to a horizontal depth shoreward of about ...
2015_Celaya_et_al_Cuphea_HPollen_Ann Bot
... grow. Variability in abiotic conditions, such as light and water availability, has the potential to affect pollen–stigma interactions (i.e. conspecific pollen germination and performance), which will probably influence the effects of HP receipt. Thus, a more complete understanding of the extent, str ...
... grow. Variability in abiotic conditions, such as light and water availability, has the potential to affect pollen–stigma interactions (i.e. conspecific pollen germination and performance), which will probably influence the effects of HP receipt. Thus, a more complete understanding of the extent, str ...
The Adaptive Radiation of Cichlid Fish in Lake Tanganyika: A
... tribes, were shown to be nested within the haplochromines, the most species-rich lineage that also includes the species flocks of the remaining East African Great Lakes and the majority of the northern, eastern, and southern African riverine cichlid species but originated in the course of the primar ...
... tribes, were shown to be nested within the haplochromines, the most species-rich lineage that also includes the species flocks of the remaining East African Great Lakes and the majority of the northern, eastern, and southern African riverine cichlid species but originated in the course of the primar ...
Spatial, temporal and ontogenetic patterns of habitat use by coral
... Spatial, temporal and ontogenetic patterns of habitat use. Using methods selected in the pilot study (see 'Pilot study' above), the spatial patterns of distribution and abundance of labnds were surveyed in 6 habitat zones at 3 sites in January 1992. Transects were the same as those used to describe ...
... Spatial, temporal and ontogenetic patterns of habitat use. Using methods selected in the pilot study (see 'Pilot study' above), the spatial patterns of distribution and abundance of labnds were surveyed in 6 habitat zones at 3 sites in January 1992. Transects were the same as those used to describe ...
Groundwater Science Relevant to the Great Lakes Water Quality
... 1. Context, Scope and Purpose of This Report Being underground and “out of sight” is one reason that the role of groundwater in the Great Lakes Basin has often been overlooked, although the volume of fresh groundwater in the basin is approximately equal to that of Lake Huron. For many years, ground ...
... 1. Context, Scope and Purpose of This Report Being underground and “out of sight” is one reason that the role of groundwater in the Great Lakes Basin has often been overlooked, although the volume of fresh groundwater in the basin is approximately equal to that of Lake Huron. For many years, ground ...