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Development of Integrated Sampling of Fishes in Forested Wetlands in South Florida with Emphasis on Food Web Structure

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Carole McIvor

William Loftus (retired)

Publication_Date: Unpublished Material
Title:
Development of Integrated Sampling of Fishes in Forested Wetlands in South Florida with Emphasis on Food Web Structure
Geospatial_Data_Presentation_Form: none
Online_Linkage:
<https://sofia.usgs.gov/projects/index.php?project_url=fish_sample>
Description:
Abstract:
This study seeks to refine sampling methodology in the forested wetlands, to collect baseline data for aquatic animals to enable comparisons between Comprehensive Everglades Restoration Plan (CERP) and non-CERP impacted wetlands, and to begin studies of food-web structure in cypress and mangrove wetlands.
Purpose:
Forested wetlands, mainly comprised by mangrove and cypress swamps in south Florida, and contiguous marshes formerly functioned as critical feeding and nesting sites for wading birds, populations of which have declined precipitously in coincidence with changes to the hydrology of the region. Human-induced changes have affected the natural variability of environmental conditions through the construction of canals and levees that can either act to drain or flood the wetlands. These changes are hypothesized to have negatively affected the production and availability of fish prey for the birds. A major target of restoration is the reestablishment of the natural hydrological conditions in the wetlands. Another alteration to these systems has been the introduction of more than 10 species of non-native fishes.

The Big Cypress Swamp and mangrove ecosystems have been affected by these anthropogenic activities, yet the effects are unclear because of the lack of study. In both ecosystems, there is little quantitative information on the community composition, size-structure, and biomass of fishes and macro-invertebrates because few studies have been carried out there, This is especially true in the forested habitats of those ecosystems. Reasons for lack of study include logistical problems such as access to study areas and difficulties in devising appropriate sampling methods and feasible designs. However, because of the scope of anthropogenic changes in the drainage basins, there can be little doubt that the standing stocks of aquatic animals and habitat use have been affected negatively.

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2005
Ending_Date: 2007
Currentness_Reference: ground condition
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -81.75
East_Bounding_Coordinate: -80.75
North_Bounding_Coordinate: 26.25
South_Bounding_Coordinate: 25
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: mangrove ecotone
Theme_Keyword: wading birds
Theme_Keyword: foodweb
Theme_Keyword: wetland
Theme_Keyword: biology
Theme_Keyword: stable isotope
Theme_Keyword: chemistry
Theme_Keyword: forested wetlands
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: biota
Theme_Keyword: environment
Theme_Keyword: inlandWaters
Theme_Keyword: 002
Theme_Keyword: 007
Theme_Keyword: 012
Place:
Place_Keyword_Thesaurus:
Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions, Federal Information Processing Standard (FIPS) 10-4, Washington, DC, National Institute of Standards and Technology
Place_Keyword: United States
Place_Keyword: US
Place:
Place_Keyword_Thesaurus:
U.S. Department of Commerce, 1987, Codes for the identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard 5-2): Washington, DC, NIST
Place_Keyword: Florida
Place_Keyword: FL
Place:
Place_Keyword_Thesaurus:
Department of Commerce, 1990, Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas, FIPS 6-3, Washington, DC, National Institute of Standards and Technology
Place_Keyword: Collier County
Place_Keyword: Monroe County
Place:
Place_Keyword_Thesaurus: USGS Geographic Names Information System
Place_Keyword: Big Cypress National Preserve
Place_Keyword: Big Cypress Swamp
Place_Keyword: Shark River
Place_Keyword: North River
Place_Keyword: Watson River
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Central Everglades
Place_Keyword: SW Big Cypress
Access_Constraints: none
Use_Constraints: none
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carole C. McIvor
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 600 Fourth Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727 803-8747 ext. 3022
Contact_Facsimile_Telephone: 727 803-2032
Contact_Electronic_Mail_Address: carole_mcivor@usgs.gov
Data_Set_Credit:
Project personnel include Katie Kuss, Jerome Lorenz, Noah Silverman, and Joel Trexler

Data_Quality_Information:
Logical_Consistency_Report: unknown
Completeness_Report: not available
Lineage:
Process_Step:
Process_Description:
Four years of forest nekton data are available from 3 sites along the salinity gradient of Shark River, an area open to potential CERP effects. This project in conjunction with the CERP-MAP project of McIvor and Lorenz will continue this long-term data set for the Shark River. Secondly, this project will phase in sampling of forested nekton along the North River, a reference or non-CERP site. We will begin here with activity-trap arrays, with the goal of adding more quantitative devices in Year 2 as the gear comparisons funded by CERP-MAP proceeds. We will also begin food-web analysis of Shark River sites by measuring stable carbon and nitrogen isotope signatures in selected groups in the food web

Work planned for FY 2005:

Fish community structure (species composition, numbers, biomass and food-web structure of fringing mangroves forest wetlands in South Florida 1. Continue sampling at 3 established sites along Shark River using 2X3 m2 bottomless lift nets and intertidal rivulet nets, 3 times/yr

2: Add drift-fence arrays to collect information on fish community composition and fish movements at established Shark River sites. Samples taken concurrently with 1 above

3: Add 3 drift arrays along an upstream downstream gradient in fringing mangroves on North River.

4: Collect primary producers (mangroves, benthic microalgae, phytoplankton) and selected consumers (herbivores, detritivores, microcarnivores, piscivores) at 3 Shark River sites to describe the food webs there.

This portion of the project is a continuation of work that began in 2000, which has produced an Access database of fish species, numbers and biomass collected in fringing mangrove forests in Shark River. Data from this study's collections have been added to the database.

Big Cypress and mangrove forest food web diagnosis A study to determine sampling gear and perform cross-gear comparisons in two forested wetland systems in south Florida is providing the means to collect baseline fish and invertebrate data at reference and potential CERP-affected sites in the mangroves and cypress regions. The food-web task utilized the CERP-MAP collections to provide tissue samples for analysis, in addition to collections made specifically by task personnel. Fishes and macro-invertebrate samples were collected in each region several times across the year using several gear types. We used stable-isotope analysis to obtain carbon and nitrogen signatures for abundant taxa of primary producers and consumers. Project PIs and technicians collected, curated, and cataloged food-web samples taken from the mangrove- and cypress-forest data collections. Under direction of the PIs, the task technician prepared those samples for processing at the FL International University lab. The sampling design for each ecosystem was to sample in the three seasons in two habitats (Creeks and forests in the mangroves; wet prairie and cypress forests in the Big Cypress) from three locations. Exotic fish presence is a concern in the progress of restoration.. The study provided data on species composition and relative abundance of non-native species in the Big Cypress system, and the abundant non-native fishes in the cypress ecosystem were included in the food-web analysis.

Samples of five specimens, or composite samples, of seven groups of important primary producers, primary consumers, and secondary consumers were collected at high water, the transition period, and at low water during the routine sampling events in both systems. The groups represented at least two important chains in the food web. Samples were frozen in the field. In the lab, plants were dried, ground, and acidified. Animal tissues were dissected, dried, and pulverized. The isotopic signatures of carbon and nitrogen were measured. Carbon provides information on primary producers in the food chains while nitrogen isotopes provide information on trophic position. All isotope data were provided to the PIs for analysis and reporting. The first annual report was submitted in December 2006, and the final report in January 2008.

Sampling at the mangrove-forest sites was performed in January and April 2005. Exploratory sampling for food-web targets in the mangroves was also done at those times. Reconnaissance and preparations for deploying three drift-fence arrays were made in April/May 2005. Following a permit modification, three drift-fence arrays were set up at Watson River, a control site for Shark River in May 2005; the other three are planned for Shark River this summer. Sampling was done in July 2005 and will be repeated in November; stable-isotope samples were collected in July.

The food-web work in the PES study ran for two years, from 2005-2007, and included two sets of dry, transition, and wet-season samples from both ecosystems, as well as preliminary data from the spring of 2005. A literature review for stable-isotope work and for sampling methods has been compiled into a working bibliography. An agreement between USGS and FIU was approved to allow cooperation on the stable-isotope analysis, so that results will be comparable with previous studies and can be incorporated with them to obtain a landscape-level depiction of aquatic food webs in the Greater Everglades. Although much of Southwest Florida lies beyond the range of most CERP projects and models, there are areas of the Big Cypress National Preserve that will be affected by activities on the Big Cypress Seminole Indian Reservation and by Decompartmentalization of WCA 3-A along the L-28 Canal. Levee and canal construction along that boundary is believed to have resulted in diversion of waters away from the eastern Big Cypress and drainage of surface and ground waters. We continue to collect baseline data on fish communities in the forested wetlands of those areas, as well as in reference sites that will not receive CERP effects. Those data will be useful in meeting information needs in the Southern Golden Gates Estates for monitoring ecological responses to hydrologic change.

Process_Date: 2007
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carole C. McIvor
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 600 Fourth Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727 803-8747 ext. 3022
Contact_Facsimile_Telephone: 727 803-2032
Contact_Electronic_Mail_Address: carole_mcivor@usgs.gov

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carole C. McIvor
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 600 Fourth Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727 803-8747 ext. 3022
Contact_Facsimile_Telephone: 727 803-2032
Contact_Electronic_Mail_Address: carole_mcivor@usgs.gov
Distribution_Liability: Any data have no implied or explicit guarantees
Standard_Order_Process:
Non-digital_Form: unknown
Fees: none
Ordering_Instructions: Contact Carole McIvor for data from this project.

Metadata_Reference_Information:
Metadata_Date: 20081209
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Heather Henkel
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 600 Fourth Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727 803-8747 ext 3028
Contact_Facsimile_Telephone: 727 803-2030
Contact_Electronic_Mail_Address: sofia-metadata@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: none
Metadata_Use_Constraints:
This metadata record may have been copied from the SOFIA website and may not be the most recent version. Please check <https://sofia.usgs.gov/metadata> to be sure you have the most recent version.

This page is <https://sofia.usgs.gov/metadata/sflwww/fish_sample.html>

U.S. Department of the Interior, U.S. Geological Survey
Comments and suggestions? Contact: Heather Henkel - Webmaster
Generated by mp version 2.8.18 on Tue Dec 09 08:18:05 2008