Invasive Alien Species Fact Sheet – Dreissena polymorpha
... Minchin et al. 2002). It is now found throughout most of Europe and extending east into the western Asia and south into Turkey and Ireland in west (Mackie et al. 1989). It is largely unclear how the initial expansion from the Black Sea and Aralo-Caspian Sea took place. D. polymorpha may have penetr ...
... Minchin et al. 2002). It is now found throughout most of Europe and extending east into the western Asia and south into Turkey and Ireland in west (Mackie et al. 1989). It is largely unclear how the initial expansion from the Black Sea and Aralo-Caspian Sea took place. D. polymorpha may have penetr ...
File - Links Biology Website
... Describe the factors that affect population density. Identify when a population is growing or decreasing Look at a graph determine if it is exponential or logistic Describe the differences between exponential growth and logistic growth What is ecology? How much energy is lost from trophic level to t ...
... Describe the factors that affect population density. Identify when a population is growing or decreasing Look at a graph determine if it is exponential or logistic Describe the differences between exponential growth and logistic growth What is ecology? How much energy is lost from trophic level to t ...
State of Michigan’s Status and Strategy for Spiny Waterflea Management Scope Bythotrephes longimanus
... found that feeding activities of the spiny waterflea may be directly correlated with a reduction in zooplankton populations (Yan et al. 2002). Consumption rates of the spiny waterflea often equal or exceed the productivity of its planktonic prey (Lehman and Caceres 1993, Kelly et al. 2013). The spin ...
... found that feeding activities of the spiny waterflea may be directly correlated with a reduction in zooplankton populations (Yan et al. 2002). Consumption rates of the spiny waterflea often equal or exceed the productivity of its planktonic prey (Lehman and Caceres 1993, Kelly et al. 2013). The spin ...
Coevolutionary dynamics of adaptive radiation for food
... Introduction The present biological communities being ultimately derived from a universal ancestor through repeated speciation is a widespread idea (Di Giulio 2001). The evolutionary history seems to have been influenced by both external and internal factors. Ecological interaction among organisms ( ...
... Introduction The present biological communities being ultimately derived from a universal ancestor through repeated speciation is a widespread idea (Di Giulio 2001). The evolutionary history seems to have been influenced by both external and internal factors. Ecological interaction among organisms ( ...
The Reproductive Biology of the Diamondback Terrapin
... For comp3rative observ3tions to be valid, collecting effort must be equal between sample periods, a requirement which is not often met. Unstandardized collecting effort can easily produce biased results. ...
... For comp3rative observ3tions to be valid, collecting effort must be equal between sample periods, a requirement which is not often met. Unstandardized collecting effort can easily produce biased results. ...
Drivers of host plant shifts in the leaf beetle Chrysomela lapponica
... populations of C. lapponica have shifted to SG-poor hosts, and their secretions do not contain salicylaldehyde. 2. In was suggested that beetles shift to SG-poor hosts to escape from specialist enemies. To test this hypothesis, we compared field mortality between two populations of C. lapponica that ...
... populations of C. lapponica have shifted to SG-poor hosts, and their secretions do not contain salicylaldehyde. 2. In was suggested that beetles shift to SG-poor hosts to escape from specialist enemies. To test this hypothesis, we compared field mortality between two populations of C. lapponica that ...
weakly density-dependent mortality and the coexistence of species
... differ only moderately in their density-independent mortality is generically possible. Since the attractor is not necessarily a steady state, one could argue that this may be just another example of the well-known coexistence on a limit cycle Armstrong and McGehee (1980). Note however, that coexiste ...
... differ only moderately in their density-independent mortality is generically possible. Since the attractor is not necessarily a steady state, one could argue that this may be just another example of the well-known coexistence on a limit cycle Armstrong and McGehee (1980). Note however, that coexiste ...
The f ructokinase f rom Rhizobium leguminosarum
... amino acids, which was then compared to known fructokinase sequences. The fructokinase gene was not contained in an operon and is encoded separately from other enzymes of carbohydrate metabolism. Its product is therefore assigned to the group Ifructokinases. A putative promoter (HGACA-N,,GTTGAT), ri ...
... amino acids, which was then compared to known fructokinase sequences. The fructokinase gene was not contained in an operon and is encoded separately from other enzymes of carbohydrate metabolism. Its product is therefore assigned to the group Ifructokinases. A putative promoter (HGACA-N,,GTTGAT), ri ...
Ecological functioning of bacterial chitinases in soil - NIOO-KNAW
... from mealworm as substrates to two soils. Pyrosequencing of 16S rRNA of bacteria and of the catalytic domain of the bacterial chiA gene was applied to identify chitin-degrading bacteria containing chitinases. Both the composition of the total bacterial community and of the chitinolytic bacterial com ...
... from mealworm as substrates to two soils. Pyrosequencing of 16S rRNA of bacteria and of the catalytic domain of the bacterial chiA gene was applied to identify chitin-degrading bacteria containing chitinases. Both the composition of the total bacterial community and of the chitinolytic bacterial com ...
Pink-footed Shearwater - Registre public des espèces en péril
... birds move north along the western coasts of South America towards North America. The migration is indicated by the increasing numbers of Pink-footed Shearwaters along the continental shelf from the Gulf of California to British Columbia from April to early fall. In late October numbers begin to dec ...
... birds move north along the western coasts of South America towards North America. The migration is indicated by the increasing numbers of Pink-footed Shearwaters along the continental shelf from the Gulf of California to British Columbia from April to early fall. In late October numbers begin to dec ...
A study of archaeal enzymes involved in polar lipid
... choline, serine, glycerol and inositol. These reactions produce the membrane components phosphatidylcholine (PC), phosphatidylserine (PS), phosphatidylglycerol (PG) and phosphatidylinositol (PI) (Cronan 2003). It should be noted that all the different types of polar lipids are not always present in ...
... choline, serine, glycerol and inositol. These reactions produce the membrane components phosphatidylcholine (PC), phosphatidylserine (PS), phosphatidylglycerol (PG) and phosphatidylinositol (PI) (Cronan 2003). It should be noted that all the different types of polar lipids are not always present in ...
southern Yunnan, China - Universität Hohenheim
... natural succession leading to secondary forests. Such habitats may represent a matrix separating relatively intact plots of undisturbed old‐growth forest, but the current knowledge of the value of such matrix habitats for biodiversity conservation is still limited. Existing ...
... natural succession leading to secondary forests. Such habitats may represent a matrix separating relatively intact plots of undisturbed old‐growth forest, but the current knowledge of the value of such matrix habitats for biodiversity conservation is still limited. Existing ...
A review of the indicators for ecosystem structure and functioning
... output data from the assessment process which only apply to the assessed species (usually of commercial value) and indicators based on other sources of data (usually monitoring programmes) which may be used for both assessed and non-assessed species. 2.2.1 Health Condition factor; In fish ecology, c ...
... output data from the assessment process which only apply to the assessed species (usually of commercial value) and indicators based on other sources of data (usually monitoring programmes) which may be used for both assessed and non-assessed species. 2.2.1 Health Condition factor; In fish ecology, c ...
the Gene Ontology
... Bio-ontologies are used to capture biological information in a way that can be read by both humans and computers. necessary for high-throughput “omics” datasets allows data sharing across databases ...
... Bio-ontologies are used to capture biological information in a way that can be read by both humans and computers. necessary for high-throughput “omics” datasets allows data sharing across databases ...
Ecology, conservation, and restoration of large carnivores in western
... etc.). Thus carnivore ecologists must deal with expansive areas and multiple scales and disciplines. For this reason, studies of top carnivores have played a significant role in fostering ecosystem approaches among managers and researchers (Minta et al. 1999). Specifically, wolves (Canis lupus), couga ...
... etc.). Thus carnivore ecologists must deal with expansive areas and multiple scales and disciplines. For this reason, studies of top carnivores have played a significant role in fostering ecosystem approaches among managers and researchers (Minta et al. 1999). Specifically, wolves (Canis lupus), couga ...
What limits the Serengeti zebra population?
... (Spinage 1972), while the Serengeti population may have declined slightly between 1961 (n=179,000, Sinclair and Norton-Griffiths 1979) and 1996 (n=150,834, Moehlman 2002). For Serengeti plains zebra, no individually based estimates of foal and yearling survival are available. As these vary widely bo ...
... (Spinage 1972), while the Serengeti population may have declined slightly between 1961 (n=179,000, Sinclair and Norton-Griffiths 1979) and 1996 (n=150,834, Moehlman 2002). For Serengeti plains zebra, no individually based estimates of foal and yearling survival are available. As these vary widely bo ...
07
... in writing at least one week prior to the additional conditions taking effect. 14. Special Use Permits are granted for a maximum of one year at a time. If renewal or extension is necessary, at least one month prior to expiration of present permit, Permittee is required to submit a progress report de ...
... in writing at least one week prior to the additional conditions taking effect. 14. Special Use Permits are granted for a maximum of one year at a time. If renewal or extension is necessary, at least one month prior to expiration of present permit, Permittee is required to submit a progress report de ...
Environmental Biology ~ Allan M. Jones ~ 2001
... ‘environment’ has become a focus not only in courses traditionally concerned with geography, environmental science and ecology but also in agriculture, economics, politics, law, sociology, chemistry, physics, biology and philosophy. Simultaneously, changes in course organisation have occurred in ord ...
... ‘environment’ has become a focus not only in courses traditionally concerned with geography, environmental science and ecology but also in agriculture, economics, politics, law, sociology, chemistry, physics, biology and philosophy. Simultaneously, changes in course organisation have occurred in ord ...
CO , nitrogen, and diversity differentially affect seed production of prairie plants 2
... Abstract. Plant species composition and diversity is often influenced by early life history stages; thus, global change could dramatically affect plant community structure by altering seed production. Unfortunately, plant reproductive responses to global change are rarely studied in field settings, ...
... Abstract. Plant species composition and diversity is often influenced by early life history stages; thus, global change could dramatically affect plant community structure by altering seed production. Unfortunately, plant reproductive responses to global change are rarely studied in field settings, ...
Environmental variation has stronger effects than plant genotype on
... Oenothera genotypes affected the performance of Bromus. We used 22 genetic families (hereafter genotypes) of Oenothera, which were grown in a common environment for one generation to reduce maternal effects. Seeds were collected from these plants and used in the present experiment. The experiment co ...
... Oenothera genotypes affected the performance of Bromus. We used 22 genetic families (hereafter genotypes) of Oenothera, which were grown in a common environment for one generation to reduce maternal effects. Seeds were collected from these plants and used in the present experiment. The experiment co ...
`Pre-dispersal losses and dispersal of seeds in the Desert Biome
... Desert plants also have adaptations relating to seed dormancy, which has been observed to be highly variable, depending on environmental conditions such as nutrient levels, soil moisture and temperature (Cowling et al. 1997). An important factor which influences desert plants is the minimum amount o ...
... Desert plants also have adaptations relating to seed dormancy, which has been observed to be highly variable, depending on environmental conditions such as nutrient levels, soil moisture and temperature (Cowling et al. 1997). An important factor which influences desert plants is the minimum amount o ...
Functional over-redundancy and high functional vulnerability in
... of the FEs are left without insurance, these levels all being significantly higher than expected by chance. Thus, our study shows that, even in high-diversity systems, such as tropical reefs, functional diversity remains highly vulnerable to species loss. Although further investigations are needed t ...
... of the FEs are left without insurance, these levels all being significantly higher than expected by chance. Thus, our study shows that, even in high-diversity systems, such as tropical reefs, functional diversity remains highly vulnerable to species loss. Although further investigations are needed t ...
barn owl (tyto alba) diet composition on intensively used agricultural
... Bernard et al. (2010) recorded an increased consumption of genus Sorex during the period when the Common Vole’s population was declining. There are many other factors that can influence selective and opportunistic hunting behaviour of Barn Owls, such as prey size, time of the year and the antipredat ...
... Bernard et al. (2010) recorded an increased consumption of genus Sorex during the period when the Common Vole’s population was declining. There are many other factors that can influence selective and opportunistic hunting behaviour of Barn Owls, such as prey size, time of the year and the antipredat ...