From regional climate to river ecology

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Material Information

Title:
From regional climate to river ecology hydroclimatology and fish species richness in southeastern Peru
Physical Description:
1 online resource (127 p.)
Language:
english
Creator:
Cañas, Carlos M.
Publisher:
University of Florida
Place of Publication:
Gainesville, Fla.
Publication Date:

Thesis/Dissertation Information

Degree:
Doctorate ( Ph.D.)
Degree Grantor:
University of Florida
Degree Disciplines:
Geography
Committee Chair:
Waylen, Peter R
Committee Members:
Matyas, Corene J.
Mossa, Joann
Pine, William

Subjects

Subjects / Keywords:
amazon -- andes -- diversity -- fishes -- hydroclimatology -- migratory
Geography -- Dissertations, Academic -- UF
Genre:
Geography thesis, Ph.D.
Electronic Thesis or Dissertation
bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )

Notes

Abstract:
The Amazon Basin has the most diverse freshwater fish fauna in the world. However, this diversity is threatened by large-scale infrastructure development and changing climate in both the Amazonian lowlands and Andean highlands. Hydroelectric facilities and predicted changes in climate will likely lead to alterations in the timing, duration, and frequency of riverine flow events. These flow events are critical to the ecology of many fish species in the Madre de Dios basin (southeastern Peru), thus it is important to understand the linkage between fish and hydroclimatologic conditions to help prevent large-scale changes in fish diversity, fisheries impacts, and alterations to the aquatic habitats on which they depend on. Though data for hydrology are relatively scarce in Andean headwaters in Peru there are nevertheless large meteorological datasets that can be used to define expected river flooding regime. A data set of a 47-year period was normalized and belongs to 16 meteorological stations located at the eastern side of the Andes between 200 and 4,500 m in elevation in southeastern Peru. Fish data were obtained along the same elevation gradient from three of the most important tributaries of the basin during 3 exploratory expeditions, and from both local fishery records and scientific collection of the Museum of Natural History-UNMSM 14 (Lima, Peru). Currently, most of the research previously developed on aquatic resources in the Peruvian Amazon has focused on understanding fish ecology and river hydrology in a separate fashion, this doctoral research represents the first attempt to link these two disciplines and determine the role of hydroclimatologic characteristics of an Andean-Amazon river on fish ecology. It aims to 1) model and characterize the relationship between fish and elevation gradient, 2) conceptualize and elaborate a hydroclimatological model to identify the temporal characteristics of the flooding regime, and 3) evaluate the association of two major climatic events with the estimated hydrologic regime of the basin. This conceptual framework will support conservation strategies for the Andean-Amazon regions currently taking part of infrastructure development in the political agenda of Peru and other Amazonian countries.
General Note:
In the series University of Florida Digital Collections.
General Note:
Includes vita.
Bibliography:
Includes bibliographical references.
Source of Description:
Description based on online resource; title from PDF title page.
Source of Description:
This bibliographic record is available under the Creative Commons CC0 public domain dedication. The University of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Thesis:
Thesis (Ph.D.)--University of Florida, 2012.
Local:
Adviser: Waylen, Peter R.
Electronic Access:
RESTRICTED TO UF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE UNTIL 2014-12-31
Statement of Responsibility:
by Carlos M. Cañas.

Record Information

Source Institution:
UFRGP
Rights Management:
Applicable rights reserved.
Classification:
lcc - LD1780 2012
System ID:
UFE0044964:00001