Ecological Risk Assessment of Grass Carp (Ctenopharyngodon
... The Great Lakes have not been immune to the arrival of aquatic invasive species (AIS). As of 2016, there are over 180 non-native species reported in the Great Lakes basin (Figure 1; GLANSIS 2015). At least 69 non-native fish species have been introduced to the Great Lakes, half of which are consider ...
... The Great Lakes have not been immune to the arrival of aquatic invasive species (AIS). As of 2016, there are over 180 non-native species reported in the Great Lakes basin (Figure 1; GLANSIS 2015). At least 69 non-native fish species have been introduced to the Great Lakes, half of which are consider ...
Vocabulary Definitions
... photosynthesis the process by which producers make energy-rich molecules (food) from water and carbon dioxide in the presence of light (SRB, IG) phytoplankton a huge array of photosynthetic microorganisms that are free-floating in water (SRB) polar zone the climate zone that is closest to the North ...
... photosynthesis the process by which producers make energy-rich molecules (food) from water and carbon dioxide in the presence of light (SRB, IG) phytoplankton a huge array of photosynthetic microorganisms that are free-floating in water (SRB) polar zone the climate zone that is closest to the North ...
Biological Synopsis of the Rusty Crayfish (Orconectes rusticus)
... that O. rusticus is established in Canadian watersheds, aquatic corridors and baitbucket introductions present the next greatest potential risk for crayfish range expansion (Phillips et al. 2009). The most notable difference in ecosystem impact between O. rusticus and crayfish species native to Cana ...
... that O. rusticus is established in Canadian watersheds, aquatic corridors and baitbucket introductions present the next greatest potential risk for crayfish range expansion (Phillips et al. 2009). The most notable difference in ecosystem impact between O. rusticus and crayfish species native to Cana ...
Quantifying the effects of biodiversity on food web structure: a stable
... understanding of how diversity can affect food web structure it would therefore be constructive to consider additional measures of structure that are inclusive of all species, both dominant and rare. ...
... understanding of how diversity can affect food web structure it would therefore be constructive to consider additional measures of structure that are inclusive of all species, both dominant and rare. ...
Durham Research Online
... 43u489N, 11u499E). A 27 km2 area within this site is a protected area where hunting is banned (Fig. 1). Altitude within Alpe di Catenaia ranges from 300 to 1414 m above sea level. Vegetation cover is mainly composed of mixed deciduous hardwoods (76% of total area), dominated by oak (Quercus spp.), c ...
... 43u489N, 11u499E). A 27 km2 area within this site is a protected area where hunting is banned (Fig. 1). Altitude within Alpe di Catenaia ranges from 300 to 1414 m above sea level. Vegetation cover is mainly composed of mixed deciduous hardwoods (76% of total area), dominated by oak (Quercus spp.), c ...
Effects of introduced round goby (Neogobius melanostomus) on diet
... fish eating birds and snakes (e.g. Jakubas 2004; King et al. 2008). Round goby is not only a potential prey for predatory fish species but can also act as a predator on fish eggs and larvae (e.g. Steinhart et al. 2004b). Kornis et al. (2012) gave multiple examples for species suffering from egg depr ...
... fish eating birds and snakes (e.g. Jakubas 2004; King et al. 2008). Round goby is not only a potential prey for predatory fish species but can also act as a predator on fish eggs and larvae (e.g. Steinhart et al. 2004b). Kornis et al. (2012) gave multiple examples for species suffering from egg depr ...
Napa River Basin Limiting Factors Analysis FINAL TECHNICAL REPORT
... channel (about 10 miles) and to describe current habitat (for salmon, freshwater shrimp, and steelhead) and geomorphic conditions, and changes in channel form between 1940's and present. We found that pool filling with fine sediment is typically quite low with values less than 10 percent at 25 of 29 ...
... channel (about 10 miles) and to describe current habitat (for salmon, freshwater shrimp, and steelhead) and geomorphic conditions, and changes in channel form between 1940's and present. We found that pool filling with fine sediment is typically quite low with values less than 10 percent at 25 of 29 ...
Invasive Eurasian ruffe (
... ruffe (Edwards 1998). Traps are inexpensive, lightweight, collapsible, and can be easily deployed and retrieved from small boats providing a low cost, easy application alternative to bottom trawling. Electric and bubble barriers have been implicated as a useful method to limit the spread of Eurasia ...
... ruffe (Edwards 1998). Traps are inexpensive, lightweight, collapsible, and can be easily deployed and retrieved from small boats providing a low cost, easy application alternative to bottom trawling. Electric and bubble barriers have been implicated as a useful method to limit the spread of Eurasia ...
KATARINA OGANJAN Distribution, feeding and
... direct gradients, e.g. water depth is a typical indirect variable in the aquatic systems. Finally, resources are directly consumed by organisms, e.g. nutrients. Moreover, it is often difficult to distinguish between the above-mentioned types of gradients when the same factor acts via different pathw ...
... direct gradients, e.g. water depth is a typical indirect variable in the aquatic systems. Finally, resources are directly consumed by organisms, e.g. nutrients. Moreover, it is often difficult to distinguish between the above-mentioned types of gradients when the same factor acts via different pathw ...
(Pinus strobus) in a lake littoral zone
... known, however, about its residence time, spatial distribution, and time-related characteristics in littoral zones. CWD is particularly abundant in small, undeveloped, oligotrophic lakes where dense forest patches dominate the land–water ecotones. Littoral zone CWD provides an important substrate fo ...
... known, however, about its residence time, spatial distribution, and time-related characteristics in littoral zones. CWD is particularly abundant in small, undeveloped, oligotrophic lakes where dense forest patches dominate the land–water ecotones. Littoral zone CWD provides an important substrate fo ...
The freshwater crayfish
... re-establish some important habitats that make up part of the peculiar eco-system of transition between alpine and submediterranean zones that characterizes this protected area; to favour conservation of some of the biological communities in the two SCIs; and to enhance the function of the SCIs as e ...
... re-establish some important habitats that make up part of the peculiar eco-system of transition between alpine and submediterranean zones that characterizes this protected area; to favour conservation of some of the biological communities in the two SCIs; and to enhance the function of the SCIs as e ...
an article online about the origins of the algae
... using current sampling methods (Hawryshyn et al. 2012). Fossil evidence is important for establishing the historical presence of hard-to-detect species. This is especially true for diatoms that have resting stages that are morphologically difficult to identify, which enables the species to reside un ...
... using current sampling methods (Hawryshyn et al. 2012). Fossil evidence is important for establishing the historical presence of hard-to-detect species. This is especially true for diatoms that have resting stages that are morphologically difficult to identify, which enables the species to reside un ...
Ecological Role of Vertebrate Scavengers
... Houston 2004). Herbivores, in contrast, expend much of their energy processing and overcoming the chemical defenses of the plants that they eat (Freeland and Janzen 1974). In addition to efficient locomotion, obligate scavenging birds exhibit spectacular adaptations to a lifestyle dependent on carri ...
... Houston 2004). Herbivores, in contrast, expend much of their energy processing and overcoming the chemical defenses of the plants that they eat (Freeland and Janzen 1974). In addition to efficient locomotion, obligate scavenging birds exhibit spectacular adaptations to a lifestyle dependent on carri ...
Document
... This is where low oxygen concentrations are common, and they appear to be the most important limiting factor for the development of cuttlefish populations. The physiological processes for buoyancy in the cuttlebone of S. officinalis determine their role as major bioenergetic consumers. As indicated ...
... This is where low oxygen concentrations are common, and they appear to be the most important limiting factor for the development of cuttlefish populations. The physiological processes for buoyancy in the cuttlebone of S. officinalis determine their role as major bioenergetic consumers. As indicated ...
Invasion of the Atlantic rock crab (Cancer irroratus) at high latitudes
... only known to occur on the east coast of North America, from Florida to Labrador (Williams 1984). The distance from Iceland to the nearest land mass in North America where the crab can be found is over 2,200 km and includes long stretches of oceans with depths exceeding 1,000 m. The newly colonized ...
... only known to occur on the east coast of North America, from Florida to Labrador (Williams 1984). The distance from Iceland to the nearest land mass in North America where the crab can be found is over 2,200 km and includes long stretches of oceans with depths exceeding 1,000 m. The newly colonized ...
Patterns of distribution and abundance of larval fish in a southern
... The distribution and abundance of larval fish in the Kaikoura region, on the northeastern coast of the South Island of New Zealand, was investigated over a four year period (1994 - 1997). Spatial and temporal variability were described on both broad and fine scales. Larval fish assemblages at four s ...
... The distribution and abundance of larval fish in the Kaikoura region, on the northeastern coast of the South Island of New Zealand, was investigated over a four year period (1994 - 1997). Spatial and temporal variability were described on both broad and fine scales. Larval fish assemblages at four s ...
Final report on Effects of environment on
... Since this project report is limited to a total length of 20 pages, and over 20 full published papers have resulted from the project, we have reported a selection of our results. The results of the research programmes are reported under general titles, as most research programmes were intended to pr ...
... Since this project report is limited to a total length of 20 pages, and over 20 full published papers have resulted from the project, we have reported a selection of our results. The results of the research programmes are reported under general titles, as most research programmes were intended to pr ...
Estuary Chpt. 1 - Overview of the Kennebec Estuary
... different organisms overlap, assemblages of species co-occur in patterns that are, to varying extents, repeatable. Despite the continuous variation within these collections of organisms, attempts have been made to classify them as distinct community types Krebs 1985). Certain types of estuarine comm ...
... different organisms overlap, assemblages of species co-occur in patterns that are, to varying extents, repeatable. Despite the continuous variation within these collections of organisms, attempts have been made to classify them as distinct community types Krebs 1985). Certain types of estuarine comm ...
The impact of overgrazing on reptile diversity and
... Whereas the impact of overgrazing on plant diversity is relatively well studied (e.g. Skarpe 1990a, Floyd et al. 2003), knowledge how overgrazing affects animal diversity remain sparse. Changes in vegetation structure, composition and cover caused by overgrazing can alter environmental conditions su ...
... Whereas the impact of overgrazing on plant diversity is relatively well studied (e.g. Skarpe 1990a, Floyd et al. 2003), knowledge how overgrazing affects animal diversity remain sparse. Changes in vegetation structure, composition and cover caused by overgrazing can alter environmental conditions su ...