The Importance of the Water Conservation Areas in the Everglades to the Endangered Wood Stork (<i>Mycteria americana</i>)

Bancroft, G. Thomas; Hoffman, Wayne; Sawicki, Richard J.; Ogden, John C.

doi:10.1046/j.1523-1739.1992.06030392.x

Cited by 24 publications

(10 citation statements)

References 8 publications

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“…Mangrove forests are unlikely to be utilized by whooping cranes (Chavez‐Raminez ), and landward retreat of salt marsh is constrained along the Texas coastline by seawalls, industrial developments, and transport infrastructure (Chavez‐Ramirez & Wehtje, ). Expansion of mangroves in the Ten Thousand Island National Wildlife Refuge in Florida may have implications for the federally listed endangered wood stork ( Mycteria americana ), compounding habitat losses to expanding Melaleuca and cattail vegetation in nearby freshwater habitats (Bancroft, Hoffman, Sawicki, & Ogden, ; Krauss, From, Doyle, Doyle, & Barry, ). The reliance of these species upon at‐risk salt marsh for feeding and roosting habitat makes them particularly susceptible to the impacts of mangrove encroachment.…”

Section: What Are the Expected Changes In Ecosystem Services?mentioning

confidence: 99%

Review of the ecosystem service implications of mangrove encroachment into salt marshes

Kelleway

Cavanaugh

Rogers

et al. 2017

Global Change Biology

230

133

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Salt marsh and mangrove have been recognized as being among the most valuable ecosystem types globally in terms of their supply of ecosystem services and support for human livelihoods. These coastal ecosystems are also susceptible to the impacts of climate change and rising sea levels, with evidence of global shifts in the distribution of mangroves, including encroachment into salt marshes. The encroachment of woody mangrove shrubs and trees into herbaceous salt marshes may represent a substantial change in ecosystem structure, although resulting impacts on ecosystem functions and service provisions are largely unknown. In this review, we assess changes in ecosystem services associated with mangrove encroachment. While there is quantitative evidence to suggest that mangrove encroachment may enhance carbon storage and the capacity of a wetland to increase surface elevation in response to sea-level rise, for most services there has been no direct assessment of encroachment impact. On the basis of current understanding of ecosystem structure and function, we theorize that mangrove encroachment may increase nutrient storage and improve storm protection, but cause declines in habitat availability for fauna requiring open vegetation structure (such as migratory birds and foraging bats) as well as the recreational and cultural activities associated with this fauna (e.g., birdwatching and/or hunting). Changes to provisional services such as fisheries productivity and cultural services are likely to be site specific and dependent on the species involved. We discuss the need for explicit experimental testing of the effects of encroachment on ecosystem services in order to address key knowledge gaps, and present an overview of the options available to coastal resource managers during a time of environmental change.

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Section: What Are the Expected Changes In Ecosystem Services?mentioning

confidence: 99%

Review of the ecosystem service implications of mangrove encroachment into salt marshes

Kelleway

Cavanaugh

Rogers

et al. 2017

Global Change Biology

230

133

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“…Many Wood Storks have shifted from traditional southern Florida colonies to breed in more northern Florida colonies and in coastal Georgia and South Carolina (Ogden et al 1987; T. Murphy and M. Harris, personal communication ). However, most of the storks that nest on the relatively new Georgia–South Carolina breeding grounds appear to winter in Florida at the time of the CBCs (Coulter 1989, Bancroft et al 1992). Thus, it must be assumed that most of the U.S. population is in Florida each winter, at the time of the CBCs.…”

Section: Discussionmentioning

confidence: 99%

Nonlinear Population Dynamics of Six Species of Florida Ciconiiformes Assessed by Christmas Bird Counts

McCrimmon

Fryska²,

Ogden

et al. 1997

Ecological Applications

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We analyzed 30 years of Christmas Bird Count (CBC) data for Florida populations of six species of wading birds: Great, Cattle, and Snowy Egrets; Little Blue and Tricolored Herons; and the Wood Stork, a federally listed endangered species. These species are conspicuous components of wetland ecosystems, and the target of numerous management efforts in the state and region. The nonlinear dynamics of these populations were assessed through time series of birds seen during volunteer‐based surveys and the first differences of successive annual counts, autocorrelations, and two new metrics: correlation time and a momentum oscillator. CBCs have the advantage of being conducted regularly over a large geographic scale. When properly analyzed, CBCs are among the few available sources of reliable population information for small, dark‐plumaged species such as Little Blue and Tricolored Herons. Population trends assessed for all species by CBCs paralleled the known or suspected trends determined by breeding‐season aerial and ground surveys, conducted by professional biologists. Cattle Egret populations have declined following rapid expansion through the 1960s and 1970s; Snowy Egret and, to a lesser extent, Tricolored Heron populations have declined throughout the study period; Little Blue Heron and Great Egret numbers have been relatively stable. Wood Storks, following a period of decline that lasted into the mid‐1970s, slowly recovered through the 1980s. Only Cattle Egrets displayed strongly deterministic population dynamics, indicating that predictions of population trends for the other species will require stochastic models with broad confidence bands.

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“…The Everglades ecosystem is a complex system of marshes, canals, and levees with water control structures covering approximately 10,000 km 2 of former contiguous Everglades marsh and currently divided into large, distinct shallow impoundments (Bancroft et al 1992;Light and Dineen 1994). Surface water is delivered primarily from the north and west to the EPA through water control structures connecting the Everglades Agricultural Area (EAA), stormwater treatment areas (STAs), and the westernbasins and through urban areas along the eastern edge of the EPA.…”

Section: Study Areamentioning

confidence: 99%

Carbon pool trends and dynamics within a subtropical peatland during long-term restoration

et al. 2017

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Introduction: The Florida Everglades has undergone significant ecological change spanning the continuum of disturbance to restoration. While the restoration effort is not complete and the ecosystem continues to experience short duration perturbations, a better understanding of long-term C dynamics of the Everglades is needed to facilitate new restoration efforts. This study evaluated temporal trends of different aquatic carbon (C) pools of the northern Everglades Protection Area over a 20-year period to gauge historic C cycling patterns. Dissolved inorganic C (DIC), dissolved organic C (DOC), particulate organic C (POC), and surface water carbon dioxide (pCO 2(aq) ) were investigated between May 1, 1994 and April 30, 2015. Results: Annual mean concentrations of DIC, DOC, POC, and pCO 2(aq) significantly decreased through time or remained constant across the Water Conservation Areas (WCAs). Overall, the magnitude of the different C pools in the water column significantly differed between regions. Outgassing of CO 2 was dynamic across the Everglades ranging from 420 to 2001 kg CO 2 year −1 . Overall, the historic trend in CO 2 flux from the marsh declined across our study area while pCO 2(aq) largely remained somewhat constant with the exception of Water Conservation Area 2 which experienced significant declines in pCO 2(aq) . Particulate OC concentrations were consistent between WCAs, but a significantly decreasing trend in annual POC concentrations was observed. Conclusions: Hydrologic condition and nutrient inputs significantly influenced the balance, speciation, and flux of C pools across WCAs suggesting a subsidy-stress response in C dynamics relative to landscape scale responses in nutrient availability. The interplay between nutrient inputs and hydrologic condition exert a driving force on the balance between DIC and DOC production via the metabolism of organic matter which forms the base of the aquatic food web. Along the restoration trajectory as water quality and hydrology continues to improve, it is expected that C pools will respond accordingly.

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The Importance of the Water Conservation Areas in the Everglades to the Endangered Wood Stork (Mycteria americana)

Cited by 24 publications

References 8 publications

Review of the ecosystem service implications of mangrove encroachment into salt marshes

Review of the ecosystem service implications of mangrove encroachment into salt marshes

Nonlinear Population Dynamics of Six Species of Florida Ciconiiformes Assessed by Christmas Bird Counts

Carbon pool trends and dynamics within a subtropical peatland during long-term restoration

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