Interactions among Zebra Mussel Shells, Invertebrate Prey, and
... changing energy flow patterns within the food web. Native yellow perch, Perca flavescens, and the nonindigenous Eurasian ruffe, Gymnocephalus cernuus, are benthivores that may compete for limited food resources. As ruffe spread to areas with more dense zebra mussel populations, the zone of interacti ...
... changing energy flow patterns within the food web. Native yellow perch, Perca flavescens, and the nonindigenous Eurasian ruffe, Gymnocephalus cernuus, are benthivores that may compete for limited food resources. As ruffe spread to areas with more dense zebra mussel populations, the zone of interacti ...
Intertidal Zonation: The Rocky Intertidal
... Splash/ Spray zone (rarely covered by water) Upper intertidal zone Middle intertidal zone Lower intertidal zone (rarely exposed) ...
... Splash/ Spray zone (rarely covered by water) Upper intertidal zone Middle intertidal zone Lower intertidal zone (rarely exposed) ...
EFFECTS OF AN INVASIVE CONSUMER ON ZOOPLANKTON COMMUNITIES ARE by
... termed “multiple stressor” interactions. Communities whose assemblage was dictated by disturbance, such as in areas of large, recurrent climatic events, could be dramatically altered by interactions between these historical disturbances and new anthropogenic disturbances. Paine et al. (1998) illust ...
... termed “multiple stressor” interactions. Communities whose assemblage was dictated by disturbance, such as in areas of large, recurrent climatic events, could be dramatically altered by interactions between these historical disturbances and new anthropogenic disturbances. Paine et al. (1998) illust ...
Green Crab - Virginia Beach City Public Schools
... Japanese oysters appear to be resistant to the two oyster diseases that have devastated native oyster populations in the Chesapeake Bay — a finding that may boost efforts to find a disease-resistant gene that could aid the native species. The finding came from a controversial experiment that began J ...
... Japanese oysters appear to be resistant to the two oyster diseases that have devastated native oyster populations in the Chesapeake Bay — a finding that may boost efforts to find a disease-resistant gene that could aid the native species. The finding came from a controversial experiment that began J ...
smooth pimpleback (quadrula houstonensis)
... This report has been primarily drafted as a technical report, but introductory text, a glossary, and labeled shell feature figures have been included to assist non-malacologists with aspects of freshwater mussels. Within this report, shell length is abbreviated "sl" and other shell dimensions are ty ...
... This report has been primarily drafted as a technical report, but introductory text, a glossary, and labeled shell feature figures have been included to assist non-malacologists with aspects of freshwater mussels. Within this report, shell length is abbreviated "sl" and other shell dimensions are ty ...
Environmental context determines multi-trophic effects of consumer species loss
... to the random allocation of treatments consumers were present at ambient densities and algal assemblages were intact, incorporating natural algal abundance patterns and variation into the design of this experiment. Mussels and molluscan grazers were removed manually from treatments to simulate loss ...
... to the random allocation of treatments consumers were present at ambient densities and algal assemblages were intact, incorporating natural algal abundance patterns and variation into the design of this experiment. Mussels and molluscan grazers were removed manually from treatments to simulate loss ...
WELCOME TO BIOLOGY 2002
... Consumptive competition occurs when organisms compete for the same resources. These trees are competing for nitrogen and other nutrients. ...
... Consumptive competition occurs when organisms compete for the same resources. These trees are competing for nitrogen and other nutrients. ...
Columbia River Basin - Preventing an Invasion
... not yet occurred. Manual removal can take place via hand extraction or via mechanical scraping and suction, typically using divers. In Lake George, New York an effort involving hand harvesting by divers appears to have significantly reduced an introduced population. Divers removed 267 mussels in 199 ...
... not yet occurred. Manual removal can take place via hand extraction or via mechanical scraping and suction, typically using divers. In Lake George, New York an effort involving hand harvesting by divers appears to have significantly reduced an introduced population. Divers removed 267 mussels in 199 ...
Habitat alteration and community-level effects of an exotic mussel
... Mission Bay, San Diego, where remnant salt marsh (Spartina foliosa and Salicornia spp.), sand/mud flat, and eelgrass (Zostera marina) habitats are present. Mission Bay is a shallow, highly-modified system (through filling and dredging), and its salinity is usually near full seawater. The temperature ...
... Mission Bay, San Diego, where remnant salt marsh (Spartina foliosa and Salicornia spp.), sand/mud flat, and eelgrass (Zostera marina) habitats are present. Mission Bay is a shallow, highly-modified system (through filling and dredging), and its salinity is usually near full seawater. The temperature ...
species interactions in intertidal food webs: prey or predation
... basal trophic level (filter feeders and macroalgae), however, and relatively little experimental work has documented the effects of predation among trophically high species (but see Garrity and Levings 1981, Menge et al. 1986, Barkai and McQuaid 1988, Robles and ...
... basal trophic level (filter feeders and macroalgae), however, and relatively little experimental work has documented the effects of predation among trophically high species (but see Garrity and Levings 1981, Menge et al. 1986, Barkai and McQuaid 1988, Robles and ...
Phylum Mollusca - My Teacher Pages
... species individuals either have the organs of both sexes or start out as males and later become females. • Bivalve eggs and sperm are usually released into the water, where fertilization takes place. The eggs hatch into veligers (VEL-ih-jerz), or young, that live among and eat other plankton. ...
... species individuals either have the organs of both sexes or start out as males and later become females. • Bivalve eggs and sperm are usually released into the water, where fertilization takes place. The eggs hatch into veligers (VEL-ih-jerz), or young, that live among and eat other plankton. ...
seashells
... cupped and the other is flat. Oysters usually reach maturity in one year. They are protandric; during their first year, they spawn as males by releasing sperm into the water. As they grow over the next two or three years and develop greater energy reserves, they spawn as females by releasing eggs. B ...
... cupped and the other is flat. Oysters usually reach maturity in one year. They are protandric; during their first year, they spawn as males by releasing sperm into the water. As they grow over the next two or three years and develop greater energy reserves, they spawn as females by releasing eggs. B ...
Rocky intertidal zonation patterns and ecological
... in the section: Coastal Processes) introduces us very briefly to tide pools and biological zonation and shows this picture of curious adults and children at low tide marveling at the animals and seaweeds clinging to the steep faces of massive rocks. What is immediately obvious to these explorers, an ...
... in the section: Coastal Processes) introduces us very briefly to tide pools and biological zonation and shows this picture of curious adults and children at low tide marveling at the animals and seaweeds clinging to the steep faces of massive rocks. What is immediately obvious to these explorers, an ...
Document
... Blotic potential of estuarine species of bivalves was higher than that of marine species. In the estuaries, the main limiting factors were silting, heavy flooding, extremely low salinity levels during the south-west monsoon, lack of substrata for settlement and other causes of mortality. In the mari ...
... Blotic potential of estuarine species of bivalves was higher than that of marine species. In the estuaries, the main limiting factors were silting, heavy flooding, extremely low salinity levels during the south-west monsoon, lack of substrata for settlement and other causes of mortality. In the mari ...
Productivity in Coastal Waters
... dry conditions at low tide. These include the ability to tightly clamp onto rocks, as with limpets; a shell closing its tightfitting operculum, as seen in snails; or a retreat to tide pools, crevices or burrows to avoid heat and wind. When the tide returns, these organisms must be able to survive th ...
... dry conditions at low tide. These include the ability to tightly clamp onto rocks, as with limpets; a shell closing its tightfitting operculum, as seen in snails; or a retreat to tide pools, crevices or burrows to avoid heat and wind. When the tide returns, these organisms must be able to survive th ...
The Invasion of the Zebra Mussel - Effects on Phytoplankton
... water treatment facilities by zebra mussel invasion are estimated to cost US $267 million through late 2004, since 1989 (Connelly et al. 2007). It is evident that higher economical problems in North America than Europe are attributed to higher densities of zebra mussels, which are often observed to ...
... water treatment facilities by zebra mussel invasion are estimated to cost US $267 million through late 2004, since 1989 (Connelly et al. 2007). It is evident that higher economical problems in North America than Europe are attributed to higher densities of zebra mussels, which are often observed to ...
Literature Review of Mussel Restoration and Sea star Management
... Section 1 - Mussel restoration Introduction Green-lipped mussels (Perna canaliculus) were once abundant in New Zealand. Extensive reefs on soft sediments environments all but disappeared throughout New Zealand, particularly in the Firth of Thames by the year 1980, due to increase in sediment input ...
... Section 1 - Mussel restoration Introduction Green-lipped mussels (Perna canaliculus) were once abundant in New Zealand. Extensive reefs on soft sediments environments all but disappeared throughout New Zealand, particularly in the Firth of Thames by the year 1980, due to increase in sediment input ...
Blue Mussel Seafood Watch Report
... dredges may cause some harm to incidentally captured invertebrates. Mussel dredges also cause more damage to the bottom habitat than hand rakes, but there are measures in place to limit the impacts of dredge gear in most states. Blue mussels are ecologically important in coastal ecosystems, so the r ...
... dredges may cause some harm to incidentally captured invertebrates. Mussel dredges also cause more damage to the bottom habitat than hand rakes, but there are measures in place to limit the impacts of dredge gear in most states. Blue mussels are ecologically important in coastal ecosystems, so the r ...
Released Science Inquiry Task The Rocky Intertidal Zone
... The Rocky Intertidal Zone Ecosystem Ms. Fletcher’s class took a field trip last March to investigate a rocky intertidal zone shoreline at low tide. At the shoreline of Coastal Park, the students took pictures of different plants and animals in the tide pools and on the rocks above the tide pools. T ...
... The Rocky Intertidal Zone Ecosystem Ms. Fletcher’s class took a field trip last March to investigate a rocky intertidal zone shoreline at low tide. At the shoreline of Coastal Park, the students took pictures of different plants and animals in the tide pools and on the rocks above the tide pools. T ...
The iconic keystone predator has a pathogen
... virus in natural settings, we can determine whether it will always be a driver of disease outbreak. The second key aspect of this three-way interaction is whether Pisaster can recover. Some areas of the northeast Pacific are already seeing the recruitment of young Pisaster, suggesting that successf ...
... virus in natural settings, we can determine whether it will always be a driver of disease outbreak. The second key aspect of this three-way interaction is whether Pisaster can recover. Some areas of the northeast Pacific are already seeing the recruitment of young Pisaster, suggesting that successf ...
clam fact sheet - World Animal Foundation
... bivalves are infaunal, living under the seabed, buried in sand, silt, mud, gravel or coral fragments. When buried in the sediment, they are protected from the pounding of waves, desiccation and overheating during low tide, and variations in salinity caused by rainwater. They are also out of the reac ...
... bivalves are infaunal, living under the seabed, buried in sand, silt, mud, gravel or coral fragments. When buried in the sediment, they are protected from the pounding of waves, desiccation and overheating during low tide, and variations in salinity caused by rainwater. They are also out of the reac ...
Factsheet shellfish reefs
... can use these areas to acclimatize on their journey between the sea and rivers. ...
... can use these areas to acclimatize on their journey between the sea and rivers. ...
Mussel
Mussel is the common name used for members of several families of clams or bivalve molluscs, from saltwater and freshwater habitats. These groups have in common a shell whose outline is elongated and asymmetrical compared with other edible clams, which are often more or less rounded or oval.The word ""mussel"" is most frequently used to mean the edible bivalves of the marine family Mytilidae, most of which live on exposed shores in the intertidal zone, attached by means of their strong byssal threads (""beard"") to a firm substrate. A few species (in the genus Bathymodiolus) have colonised hydrothermal vents associated with deep ocean ridges.In most marine mussels the shell is longer than it is wide, being wedge-shaped or asymmetrical. The external colour of the shell is often dark blue, blackish, or brown, while the interior is silvery and somewhat nacreous.The common name ""mussel"" is also used for many freshwater bivalves, including the freshwater pearl mussels. Freshwater mussel species inhabit lakes, ponds, rivers, creeks, canals, and they are classified in a different subclass of bivalves, despite some very superficial similarities in appearance.Freshwater zebra mussels and their relatives in the family Dreissenidae are not related to previously mentioned groups, even though they resemble many Mytilus species in shape, and live attached to rocks and other hard surfaces in a similar manner, using a byssus. They are classified with the Heterodonta, the taxonomic group which includes most of the bivalves commonly referred to as ""clams"".