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Full-Text Articles in Life Sciences
Fish Assemblage Change Following The Structural Restoration Of A Degraded Stream, Carl A. Favata, Anabela Maia, Manisha Pant, Vaskar Nepal
Fish Assemblage Change Following The Structural Restoration Of A Degraded Stream, Carl A. Favata, Anabela Maia, Manisha Pant, Vaskar Nepal
VIMS Articles
Decades of anthropogenic pressure have harmed riverscapes throughout North America by degrading habitats and water quality and can result in the extirpation of sensitive aquatic taxa. Local stream restoration projects have increased in frequency, but monitoring is still infrequent. In 2010, Kickapoo Creek in East Central Illinois was subjected to a stream restoration project that included implementation of artificial riffles, riprap, scouring keys, and riparian vegetation. We monitored the restoration efforts for 6years after the restoration through annual sampling efforts at restored and reference sites to determine changes in habitat and fish assemblage using standard habitat sampling and electrofishing techniques. …
Discontinuities In Soil Strength Contribute To Destabilization Of Nutrient-Enriched Creeks, Cathleen Wigand, Elizabeth B. Watson, Rose Martin, David S. Johnson, R. Scott Warren, Alana Hanson, Earl Davey,, Roxanne Johnson, Linda Deegan,
Discontinuities In Soil Strength Contribute To Destabilization Of Nutrient-Enriched Creeks, Cathleen Wigand, Elizabeth B. Watson, Rose Martin, David S. Johnson, R. Scott Warren, Alana Hanson, Earl Davey,, Roxanne Johnson, Linda Deegan,
VIMS Articles
In a whole-ecosystem, nutrient addition experiment in the Plum Island Sound Estuary (Massachusetts), we tested the effects of nitrogen enrichment on the carbon and nitrogen contents, respiration, and strength of marsh soils. We measured soil shear strength within and across vegetation zones. We found significantly higher soil percent organic matter, carbon, and nitrogen in the long-term enriched marshes and higher soil respiration rates with longer duration of enrichment. The soil strength was similar in magnitude across depths and vegetation zones in the reference creeks, but showed signs of significant nutrient-mediated alteration in enriched creeks where shear strength at rooting depths …
Allometry Of Individual Reproduction And Defense In Eusocial Colonies: A Comparative Approach To Trade-Offs In Social Sponge- Dwelling Synalpheus Shrimps, Sarah L. Bornbusch, Jonathan S. Lefcheck, J. Emmett Duffy
Allometry Of Individual Reproduction And Defense In Eusocial Colonies: A Comparative Approach To Trade-Offs In Social Sponge- Dwelling Synalpheus Shrimps, Sarah L. Bornbusch, Jonathan S. Lefcheck, J. Emmett Duffy
VIMS Articles
Eusociality, one of the most complex forms of social organization, is thought to have evolved in several animal clades in response to competition for resources and reproductive opportunities. Several species of snapping shrimp in the genus Synalpheus, the only marine organisms known to exhibit eusociality, form colonies characterized by high reproductive skew, and aggressive territoriality coupled with cooperative defense. In eusocial Synalpheus colonies, individual reproduction is limited to female 'queens', whose fecundity dictates colony growth. Given that individual reproduction and defense are both energetically costly, individual and colony fitness likely depend on the optimal allocation of resources by these reproducing …