biodiversity in the high parana river floodplain
... Baia River, one of its principal tributaries (Train and Rodrigues 1998). Higher species richness seems to be found in the lagoons. At Patos lagoon close to the Ivinheima River, Rodrigues (1998) recorded 273 taxa, and in Guarana lagoon, 220 taxa were identified (Train 1998). These lagoons have higher ...
... Baia River, one of its principal tributaries (Train and Rodrigues 1998). Higher species richness seems to be found in the lagoons. At Patos lagoon close to the Ivinheima River, Rodrigues (1998) recorded 273 taxa, and in Guarana lagoon, 220 taxa were identified (Train 1998). These lagoons have higher ...
Declining amphibian populations and possible ecological
... important ecological role in the maintenance of water quality. Filtering activity is often so high, that the complete volume of many water bodies is turned over in a short time (Ostroumov 2005), e.g. a maximum filter feeding capacity of 770 ml filtered water per gram per minute was detected for Xenopu ...
... important ecological role in the maintenance of water quality. Filtering activity is often so high, that the complete volume of many water bodies is turned over in a short time (Ostroumov 2005), e.g. a maximum filter feeding capacity of 770 ml filtered water per gram per minute was detected for Xenopu ...
Prey abundance and habitat use by migratory shorebirds at coastal
... Island Sound coastline in 2000. Coastal Connecticut provides important habitat not only for shorebirds migrating from northern Canada to South America, but also for resident breeding shorebirds (e.g., oystercatchers, plovers, and sandpipers). Our prey availability surveys indicate that all three sto ...
... Island Sound coastline in 2000. Coastal Connecticut provides important habitat not only for shorebirds migrating from northern Canada to South America, but also for resident breeding shorebirds (e.g., oystercatchers, plovers, and sandpipers). Our prey availability surveys indicate that all three sto ...
Stream Care Guide
... Corridor and Wetlands Protection Ordinance. For many properties, the protected riparian corridor is 50’ from the bankfull flowline or the extent of riparian woodland. However, the extent of the riparian corridor varies depending on the type of stream and whether the property is urban or rural (see p ...
... Corridor and Wetlands Protection Ordinance. For many properties, the protected riparian corridor is 50’ from the bankfull flowline or the extent of riparian woodland. However, the extent of the riparian corridor varies depending on the type of stream and whether the property is urban or rural (see p ...
Common Name (Scientific name)
... Juveniles prefer deep (greater than 3 feet), well shaded pools with plenty of overhead cover; highest densities are typically associated with logs and other woody debris in the pools or runs. Juveniles require water temperatures that do not exceed 71-77 degrees F for extended time and oxygen and foo ...
... Juveniles prefer deep (greater than 3 feet), well shaded pools with plenty of overhead cover; highest densities are typically associated with logs and other woody debris in the pools or runs. Juveniles require water temperatures that do not exceed 71-77 degrees F for extended time and oxygen and foo ...
Living where the flow is right: How flow affects
... (Denis et al. 2007) and 10–12 species of marine and freshwater molluscan bivalves (Ackerman 1999), including the bay scallop Argopecten irradians (Kirby-Smith 1972; Wildish et al. 1987). Bryozoans have been inadequately studied for evaluating how feeding varies as a function of velocity, so it is un ...
... (Denis et al. 2007) and 10–12 species of marine and freshwater molluscan bivalves (Ackerman 1999), including the bay scallop Argopecten irradians (Kirby-Smith 1972; Wildish et al. 1987). Bryozoans have been inadequately studied for evaluating how feeding varies as a function of velocity, so it is un ...
MARELAC ` BOTANY` 3
... - soil formation by trapping debris (aerial roots!! + filamentous algae); - filter land run-off -> removing terrestrial organic matter; - habitats for many faunal species (nursery function!); - producers of detritus -> offshore productivity. • Mangrove loss: soil reclamation for aquaculture (shrimps ...
... - soil formation by trapping debris (aerial roots!! + filamentous algae); - filter land run-off -> removing terrestrial organic matter; - habitats for many faunal species (nursery function!); - producers of detritus -> offshore productivity. • Mangrove loss: soil reclamation for aquaculture (shrimps ...
Chapter 2 Diatoms in the pelagic and benthic environment
... 1998,) whereas light and temperature are the important triggers for germination (McQuoid and Hobson 1995). However, to some extent, temperature and light intensity also influence the rate of sporulation (Graf et al. 1983, Hoban et al. 1980, Bodungen et al. 1986, Pitcher 1986, Oku and Kamatani 1995) ...
... 1998,) whereas light and temperature are the important triggers for germination (McQuoid and Hobson 1995). However, to some extent, temperature and light intensity also influence the rate of sporulation (Graf et al. 1983, Hoban et al. 1980, Bodungen et al. 1986, Pitcher 1986, Oku and Kamatani 1995) ...
What can be done to prevent seagrass loss?
... species with ship ballast water and a few contries (e.g. Australia and New Zealand) have implemented strictly enforced regulations to prevent intentional import of new species. Such regulations should also be implemented within the European Community. However, invasions of nonnative species and outb ...
... species with ship ballast water and a few contries (e.g. Australia and New Zealand) have implemented strictly enforced regulations to prevent intentional import of new species. Such regulations should also be implemented within the European Community. However, invasions of nonnative species and outb ...
Get PDF - Wiley Online Library
... Diatoms represent an ideal group of model organisms to test these ideas, as past research on warmingrelated body-size changes has produced mixed results. We use the term body size here in place of cell size, since it is understood in its broader sense in the application of the temperature–size rules ...
... Diatoms represent an ideal group of model organisms to test these ideas, as past research on warmingrelated body-size changes has produced mixed results. We use the term body size here in place of cell size, since it is understood in its broader sense in the application of the temperature–size rules ...
GEOTHERMAL SYSTEMS IN GLOBAL PERSPECTIVE
... Some 50 years ago geothermal fields were divided into high- and low- temperature fields or areas. This division was based on (arbitrarily) inferred temperature at 1 km depth. It was soon realized that most of the former are related to volcanism (>160 - >300 °C) (category a) and that the latter draw ...
... Some 50 years ago geothermal fields were divided into high- and low- temperature fields or areas. This division was based on (arbitrarily) inferred temperature at 1 km depth. It was soon realized that most of the former are related to volcanism (>160 - >300 °C) (category a) and that the latter draw ...
Prey abundance and habitat use by migratory shorebirds
... Island Sound coastline in 2000. Coastal Connecticut provides important habitat not only for shorebirds migrating from northern Canada to South America, but also for resident breeding shorebirds (e.g., oystercatchers, plovers, and sandpipers). Our prey availability surveys indicate that all three sto ...
... Island Sound coastline in 2000. Coastal Connecticut provides important habitat not only for shorebirds migrating from northern Canada to South America, but also for resident breeding shorebirds (e.g., oystercatchers, plovers, and sandpipers). Our prey availability surveys indicate that all three sto ...
No Slide Title
... Aquatic Life Zone Aquatic Life Zone: major marine or freshwater portion of the ecosphere, containing numerous ecosystems ...
... Aquatic Life Zone Aquatic Life Zone: major marine or freshwater portion of the ecosphere, containing numerous ecosystems ...
Today we are going to discuss a very important topic namely
... components. How do we define an ecosystem? It is a community of Living and Non living things together in a specific location. When we speak about Living (Biotic)-Plants, it includes animals, fungi and bacteria are all biotic or living factors. Non-living Components (Abiotic) - Abiotic, meaning not a ...
... components. How do we define an ecosystem? It is a community of Living and Non living things together in a specific location. When we speak about Living (Biotic)-Plants, it includes animals, fungi and bacteria are all biotic or living factors. Non-living Components (Abiotic) - Abiotic, meaning not a ...
estuary-net
... From the largest landscape features to the smallest microscopic organisms, an estuary is a fascinating place. When viewing an estuary from the air, for example, one is awed by striking river bends as freshwater finds its way back to the sea, the vast expanse of marsh grasses or mudflats, extending o ...
... From the largest landscape features to the smallest microscopic organisms, an estuary is a fascinating place. When viewing an estuary from the air, for example, one is awed by striking river bends as freshwater finds its way back to the sea, the vast expanse of marsh grasses or mudflats, extending o ...
SP10 - Miss S. Harvey
... abiotic factors are temperature, wind, water, sunlight, and oxygen. The abiotic factors in the kelp beds would include (among others) the water temperature, the currents, and factors such as an oil spill. Abiotic and biotic factors are connected to each other (Figure 2). As organisms live, they alt ...
... abiotic factors are temperature, wind, water, sunlight, and oxygen. The abiotic factors in the kelp beds would include (among others) the water temperature, the currents, and factors such as an oil spill. Abiotic and biotic factors are connected to each other (Figure 2). As organisms live, they alt ...
SUBSTRATE CHARACTERISTICS, FISH GRAZING
... of rough surface texture, our study held this factor constant and separately investigated the effects of chemical composition and small-scale relief. Our experimental design further controlled substrate size and location, impact of environmental factors, and time in the field. The hypothesis regardi ...
... of rough surface texture, our study held this factor constant and separately investigated the effects of chemical composition and small-scale relief. Our experimental design further controlled substrate size and location, impact of environmental factors, and time in the field. The hypothesis regardi ...
Stable isotopes as trophic tracers: combining field sampling and
... a food source for (surface) deposit feeders. Despite the clearly demonstrated resuspension of benthic algae at high current velocities, suspension feeders appeared to depend almost exclusively on pelagic algae (and possibly detrital carbon) as a food source. Based on the results of the experiments, ...
... a food source for (surface) deposit feeders. Despite the clearly demonstrated resuspension of benthic algae at high current velocities, suspension feeders appeared to depend almost exclusively on pelagic algae (and possibly detrital carbon) as a food source. Based on the results of the experiments, ...
When is a trophic cascade a trophic cascade?
... interaction as a trophic cascade, regardless of the exact mechanism by which the indirect interaction occurs (e.g. trophic cascades would include strong effects arising from indirect interactions, such as keystone or intraguild predation). Second, this definition (which includes both species-level a ...
... interaction as a trophic cascade, regardless of the exact mechanism by which the indirect interaction occurs (e.g. trophic cascades would include strong effects arising from indirect interactions, such as keystone or intraguild predation). Second, this definition (which includes both species-level a ...
Organisms and food webs in rock pools
... 1987). This is common among zooplankton and many other groups of rock pool species (Ranta 1982). Water insects (imagines) and gammarids may escape when conditions deteriorate while other species survive drought or freezing in the sediments. Other adaptations to unpredictable habitats are short life ...
... 1987). This is common among zooplankton and many other groups of rock pool species (Ranta 1982). Water insects (imagines) and gammarids may escape when conditions deteriorate while other species survive drought or freezing in the sediments. Other adaptations to unpredictable habitats are short life ...
Standard Deviation
... More about the Galapagos Islands (from UNESCO’s World Heritage Center, http://whc.unesco.org/en/list/1) Situated in the Pacific Ocean some 1,000 km from the South American continent, these 19 islands and the surrounding marine reserve have been called a unique ‘living museum and showcase of evoluti ...
... More about the Galapagos Islands (from UNESCO’s World Heritage Center, http://whc.unesco.org/en/list/1) Situated in the Pacific Ocean some 1,000 km from the South American continent, these 19 islands and the surrounding marine reserve have been called a unique ‘living museum and showcase of evoluti ...
Behavioral Interactions Among Four Species of the Salamander
... I chose a site at 995 m elevation in Boone, North Carolina, where all four species are abundant. The site borders a second-order tributary of the South Fork of the New River. I then developed two contrasting ex? perimental designs to determine substrate choices, both of individuals alone and in the ...
... I chose a site at 995 m elevation in Boone, North Carolina, where all four species are abundant. The site borders a second-order tributary of the South Fork of the New River. I then developed two contrasting ex? perimental designs to determine substrate choices, both of individuals alone and in the ...
Etowah River Basin Stressors Analysis - Web8
... conditions in the Etowah, where fishes are impacted by a range of land uses, dominated by the threat of urbanization. The left side of the diagram indicates the five classes of requirements for the long-term persistence of sensitive fish: • Healthy Water. Water of the appropriate temperature, with a ...
... conditions in the Etowah, where fishes are impacted by a range of land uses, dominated by the threat of urbanization. The left side of the diagram indicates the five classes of requirements for the long-term persistence of sensitive fish: • Healthy Water. Water of the appropriate temperature, with a ...
Pdf version - Université de Liège
... While the dead leaves can then be assimilated, they have lost many of the nutrients they once contained, either because they also dissolved in the water or because the plant reabsorbed them just before shedding each leaf (in a process known as remobilisation). 'This is similar to how trees retrieve ...
... While the dead leaves can then be assimilated, they have lost many of the nutrients they once contained, either because they also dissolved in the water or because the plant reabsorbed them just before shedding each leaf (in a process known as remobilisation). 'This is similar to how trees retrieve ...
Habitat coupling in lake ecosystems
... both vertical and horizontal dimensions (Lodge et al. 1988). This heterogeneity is associated with physical structure created by sediments, rocks, aquatic plants and woody debris from riparian habitats (Eschmeyer 1936, Christensen et al. 1996, Covich et al. 1999), and steep chemical gradients within ...
... both vertical and horizontal dimensions (Lodge et al. 1988). This heterogeneity is associated with physical structure created by sediments, rocks, aquatic plants and woody debris from riparian habitats (Eschmeyer 1936, Christensen et al. 1996, Covich et al. 1999), and steep chemical gradients within ...
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.↑ ↑ ↑ ↑