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Laurel S. Collins

Associate Professor
Ph.D. Yale University, 1989

M.S. George Washington University, 1985
B.S. University of Maryland, 1974

 

Office:  PC 435

Laboratory:  PC 349A

Telephone:  (305) 348-1732

Email:  collinsl@fiu.edu

 

For a complete CV in pdf  format please click here.

Paleobiology, Micropaleontology


Research Interests

I investigate environmental changes of the past and the extent to which they have affected evolution, including changes in evolutionary rates, communities, and organismal morphology. The originations and extinctions of fossil taxa and their ecology/paleoecology are used to identify evolutionary, paleoceanographic, paleoclimatic and tectonic trends through time. Current research projects include:

Neogene Evolution of Tropical American Benthic Foraminifera

The Neogene emergence of the Isthmus of Panama separated tropical Eastern Pacific and Western Atlantic biotas. Fieldwork in Central America (Panama, Costa Rica, Nicaragua) and Ecuador is establishing a stratigraphic and paleoenvironmental framework to assess biogeographic and evolutionary changes.

Uplift of the Isthmus of Panama

I am using the paleoecology, paleobiogeography and stable isotopes of foraminifera to identify evolutionary shallow-water paleoceanographic and tectonic changes associated with the early Miocene to early Pliocene emergence of the Isthmus of Panama. 

Seagrass History of Florida Bay, Everglades National Park

FIU geologists, biologists and chemists are investigating the amount of variation in coastal environmental conditions that is naturally occurring. Our approach is to reconstruct the historical record of seagrass abundance, which is highly correlated with environmental water quality. We have collected sediment cores and obtained ages as old as 4000+ years, and we are using proxies of seagrass abundance contained in the sediment as indicators of the environmental water quality of the past few hundred years. I am studying seagrass-associated foraminifera as an indicator of seagrass abundance, and will combine my results with the other proxies (sedimentology, geochemistry, diatoms) to produce an integrated history of Florida Bay seagrass abundance.

Selected publications:

Jain, S., and Collins, L.S. (2007). Trends in Caribbean paleoproductivity related to the Neogene closure of the Central American Seaway. Marine Micropaleontology, v. 63, pp. 57-74.

Coates, A.G., L.S. Collins, M.P. Aubry, and W.A. Berggren (2004). The geology of the Darien, Panama, and the late Miocene-Pliocene collision of the Panama arc with northwestern South America. Geological Society of America Bulletin, v. 116 (11/12), pp. 1327-1344.

Buzas, M.B., L.S. Collins, and S.J. Culver (2002). Latitudinal difference in biodiversity caused by higher tropical rate of increase. Proceedings of the National Academy of Science, v. 99, no. 12, pp. 7841-7843.

Collins, L.S., and A.G. Coates (Editors; 1999/2000). A Paleobiotic Survey of Caribbean Faunas from the Neogene of the Isthmus of Panama. Bulletins of American Paleontology, no. 357, 351 pp.

Collins, L.S., A.F. Budd, and A.G. Coates (1996). Earliest evolution associated with closure of the Tropical American Seaway. Proceedings of the National Academy of Sciences, v. 93: 6069-6072.

Collins, L.S., A.G. Coates, W.A. Berggren, M.-P. Aubry, and J. Zhang (1996). The late Miocene Panama isthmian strait. Geology, v. 24, no. 8: 687-690.

Collins, L.S., A.G. Coates, J.B.C. Jackson, and J.A. Obando (1995). Timing and rates of emergence of the Limón and Bocas del Toro basins: Caribbean effects of Cocos Ridge subduction?. In P. Mann (ed.), Geologic and Tectonic Development of the Caribbean Plate Boundary in southern Central America. Geological Society of America, Special Paper: 263-289.

Collins, L.S. (1993). Neogene paleoenvironments of the Bocas del Toro Basin, Panama. Journal of Paleontology, v. 67: 699-710.

Collins, L.S. (1990). The correspondence between water temperature and coiling direction in Bulimina. Paleoceanography, v. 5 (3): 289-294.

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4/17/08

 

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