geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

A mechanistic model for understanding invasions using the environment as a predictor of population success


, : A mechanistic model for understanding invasions using the environment as a predictor of population success. Diversity and Distributions 17(6): 1210-1224

We set out to develop a temperature- and salinity-dependent mechanistic population model for copepods that can be used to understand the role of environmental parameters in population growth or decline. Models are an important tool for understanding the dynamics of invasive species; our model can be used to determine an organism s niche and explore the potential for invasion of a new habitat.Location Strait of Georgia, British Columbia, Canada. We developed a birth rate model to determine the environmental niche for an estuarine copepod. We conducted laboratory experiments to estimate demographic parameters over a range of temperatures and salinities for Eurytemora affinis collected from the Nanaimo Estuary, British Columbia (BC). The parameterized model was then used to explore what environmental conditions resulted in population growth vs. decline. We then re-parameterized our model using previously published data for E. affinis collected in the Seine Estuary, France (SE), and compared the dynamics of the two populations. We established regions in temperature salinity space where E. affinis populations from BC would likely grow vs. decline. In general, the population from BC exhibited positive and higher intrinsic growth rates at higher temperatures and salinities. The population from SE exhibited positive and higher growth rates with increasing temperature and decreasing salinity. These different relationships with environmental parameters resulted in predictions of complex interactions among temperature, salinity and growth rates if the two subspecies inhabited the same estuary.Main conclusions We developed a new mechanistic model that describes population dynamics in terms of temperature and salinity. This model may prove especially useful in predicting the potential for invasion by copepods transported to Pacific north-west estuaries via ballast water, or in any system where an ecosystem is subject to invasion by a species that shares demographic characteristics with an established (sub)species.

US$19.90

DOI: 10.1111/j.1472-4642.2011.00791.x


Other references

Boon, L.M.; Brouillard, P.; Irrthum, A.; Karttunen, L.; Warman, M.L.; Rudolph, R.; Mulliken, J.B.; Olsen, B.R.; Vikkula, M., 1999: A gene for inherited cutaneous venous anomalies ("glomangiomas") localizes to chromosome 1p21-22. Venous malformations (VMs) are localized defects of vascular morphogenesis. They can occur in every organ system, most commonly in skin and muscle. They can cause pain and bleeding, and in some critical locations they can be life threatening. Usua...

Lakhanpal T.N., 1972: Slime molds of delhi india. Sydowia 26(1-6): 210-213

Mohan, N.; Sudheesh, A.P.; Francis, N.; Anderson, R.; Laishram, R.S., 2015: Phosphorylation regulates the Star-PAP-PIPKIα interaction and directs specificity toward mRNA targets. Star-PAP is a nuclear non-canonical poly(A) polymerase (PAP) that shows specificity toward mRNA targets. Star-PAP activity is stimulated by lipid messenger phosphatidyl inositol 4,5 bisphoshate (PI4,5P2) and is regulated by the associated Type I p...

Ludwig, F.; Ries, J.V., 1938: On the problem of sex differentiation. 1. Experimental production of intersexes. 2. Experimental induction of sterility by high doses of sex hormones. 3. Experimental control of sex by administration of sex hormone to the mother. GENETIC chicks injected with 250 I.U. of progynon developed after hatching into intersexes, but later reverted to the genetic sex, though the testes at 6-8 mths. were markedly lobulated. Laying was suppressed in a for a month by 2 consecutive inje...

Göker, H.; Ozden, Sçkin.; Yildiz, S.; Boykin, D.W., 2005: Synthesis and potent antibacterial activity against MRSA of some novel 1,2-disubstituted-1H-benzimidazole-N-alkylated-5-carboxamidines. A series of 28 novel 1,2-disubstituted-1H-benzimidazole-N-alkylated-5-carboxamidine derivatives were synthesized and evaluated for in vitro antibacterial activities against Staphylococcus aureus and methicillin resistant S. aureus (MRSA) by the tu...

Stebbins, G.Ledyard, 1938: Cytological characteristics associated with the different growth habits in the dicotyledons. Through compilation from published lists of chromosome numbers and from numerous other publications, 205 genera of woody dicotyledons, 151 of herbaceous dicotyledons, and 22 containing both woody and herbaceous spp. were compared as to their basic...

Masjedi, M.; Khosravi, A.; Sabetian, G.; Rahmanian, M.Reza., 2014: Incidental intrathecal injection of meglumine diatrizoate. Myelograghy is a process of instilling contrast medium to the subarachnoid space for evaluating the spinal column by radiography. There are various contrast solutions for different radiographic studies but not all of them are suitable for spinal c...

Willmanns, H., 1954: Specific directed organic chemotherapy of carcinoma of the prostate. El Dia Medico 26(24): 564-568

Nama, H.S., 1976: On the occurrence of Ceylonocotyle cuonum (Bhalerao, 1937) (Trematoda: Paramphistomidae). A specimen of Ceylonocotyle cuonum from buffalo, a new host, in Rajasthan, India, is described and compared with the original description of the species. It differs in the greater measurements of the body and organs.

Roberts, E.L.Jr; Chih, C.P., 1996: Changes in intracellular and extracellular pH during and after anoxia in hippocampal slices from young adult and aged rats. Society for Neuroscience Abstracts 22(1-3): 1232