Regional Quaternary submarine geomorphology in the Florida Keys

Lidz, Barbara H.; Reich, Christopher D.; Shinn, Eugene A.

doi:10.1130/0016-7606(2003)115<0845:rqsgit>2.0.co;2

Cited by 43 publications

(86 citation statements)

References 45 publications

(62 reference statements)

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“…These outlier-reef deposits exhibit a shelf-margin, wedge geometry, onlapping the seaward-dipping MIS 5e surface ( Fig. 9.8), and they form the antecedent underpinning for Holocene reef development in the Florida Keys (Multer et al 2002a;Lidz, Reich, and Shinn 2003). At the time of the MIS 5a high stand, sea level stood ~9 m below the present.…”

Section: Ecological Shifts Along the Florida Reef Tract 261mentioning

confidence: 99%

“…An excellent deeper-water modern counterpart exists in the Diploria-Montastraea-Porites zone on the reefs of the Flower Garden Banks in the Gulf of Mexico (Bright et al 1984;Gittings et al 1992). Recently, Lidz, Reich, and Shinn (2003) discussed the possibility that the "corals of the Key Largo Limestone prefer low-energy conditions and generally grow in water deeper than 5 m."…”

Section: The Pleistocene Reef Systemmentioning

confidence: 99%

“…Hoffmeister and Multer (1968) preferred the latter interpretation although they indicated, " [T]here is a strong possibility that this was aided by a certain amount of down-tilting or faulting or both." However, the south Florida platform has been tectonically stable during the late Quaternary (Davis, Hine, and Shinn 1992;Lidz, Reich, and Shinn 2003), and although possible, erosion of up to 24 m of limestone in 120 ky is not likely. Actual erosion rates can be calculated by taking the difference between the maximum sea level at Key Largo time (+7 m) and the current preserved elevations of the exposed Key Largo Limestone (+1-6 m) throughout the Keys.…”

Section: The Pleistocene Reef Systemmentioning

confidence: 99%

“…9.4.2 The Late Pleistocene: Marine Isotope Stages 5c, 5b, and 5a Lundberg (1998, 1999)-see also , Ludwig et al (1996), Lidz et al (1997b), Multer et al (2002a), Lidz, Reich, and Shinn (2003)-have shown that the reefs that lie beneath the Holocene and modern reef tract are equivalent to MIS 5c and 5a, and they have been dated at approximately 106 to 112 ka and 78 to 86 ka, respectively. Recently, Lidz (2004) documented MIS 5b reefal deposits dating between 87 and 94 ka sandwiched between the MIS 5c and 5a outlier reefs.…”

Section: Ecological Shifts Along the Florida Reef Tract 261mentioning

confidence: 99%

“…In south Florida, such drowned shelf features have been identified using high-resolution seismic, side-scan sonar and in situ sampling by submersibles in water depths of 50 to 124 m (Locker et al 1996). Although the rate of rise in sea level during the Holocene (the last 10 ky) has never exceeded the maximum accretion rate of A. palmata, reef growth was not continuous but punctuated by a series of reef ridges and troughs (Lighty 1977;Lighty, Macintyre, and Stuckenrath 1978;Toscano and Lundberg 1998;Precht et al 2000;Lidz, Reich, and Shinn 2003).…”

Section: The Latest Pleistocene and Holocene History Of Reef-buildingmentioning

confidence: 99%

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Ecological Shifts along the Florida Reef Tract: The Past as a Key to the Future

Precht

Miller

Geological Approaches to Coral Reef Ecology

122

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Section: Ecological Shifts Along the Florida Reef Tract 261mentioning

confidence: 99%

Section: The Pleistocene Reef Systemmentioning

confidence: 99%

Section: The Pleistocene Reef Systemmentioning

confidence: 99%

Section: Ecological Shifts Along the Florida Reef Tract 261mentioning

confidence: 99%

Section: The Latest Pleistocene and Holocene History Of Reef-buildingmentioning

confidence: 99%

See 3 more Smart Citations

Ecological Shifts along the Florida Reef Tract: The Past as a Key to the Future

Precht

Miller

Geological Approaches to Coral Reef Ecology

122

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Habitat availability and depth‐driven population demographics regulate reproductive output of a coral reef fish

et al. 2016

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, J. Reed, and S. Sponaugle. 2016. Habitat availability and depth-driven population demographics regulate reproductive output of a coral reef fish. Ecosphere 7(11):e01542. 10. 1002/ecs2.1542 Abstract. Global habitat decline may displace organisms from optimal environments, increasing reliance on ecosystems with lower habitat suitability and availability. For coral reef fishes, potentially marginal mesophotic coral ecosystems (~30-150 m) may be buffered from anthropogenic stressors; however, variation in habitat quality across depths can alter population demographics, reproductive output, and subpopulation size, potentially restricting the ability for peripheral habitats to support declining populations through larval supply. This study incorporated population density, benthic habitat, and depth-stratified population demographics to assess bicolor damselfish (Stegastes partitus) subpopulation reproductive output from a broad geographic region encompassing the known depth distribution of the species, including coral reefs in the Florida Keys (0-35 m depths) and mesophotic reefs (~60-90 m) at Pulley Ridge (PR) on the west Florida Shelf. Results indicated that densities of bicolor damselfish peaked in mid-shelf (10-20 m) and deep-shelf (20-30 m) habitats, and subpopulation sizes and reproductive output peaked at mid-depths (10-20 m) in the Florida Keys and declined as depth increased. Subpopulation egg production was affected by differences in demographics across depths, including fish size, sex ratios, and a lower probability and frequency of spawning in deeper habitats. Despite low population densities on mesophotic reefs, the expansive reef area at PR resulted in an estimated subpopulation size that comprised ~14% of the population in the study region, and ~9% of the total reproductive output, indicating that peripheral mesophotic reefs may be sources of larvae that can subsidize declining populations. Larval dispersal and population connectivity models used to inform ecosystem management should incorporate spatially explicit demographics across depth distributions and habitat availability that have substantial effects on egg production and larval supply.

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The unprecedented loss of Florida's reef‐building corals and the emergence of a novel coral‐reef assemblage

Toth

Stathakopoulos

Kuffner

et al. 2019

Ecology

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Over the last half century, climate change, coral disease, and other anthropogenic disturbances have restructured coral‐reef ecosystems on a global scale. The disproportionate loss of once‐dominant, reef‐building taxa has facilitated relative increases in the abundance of “weedy” or stress‐tolerant coral species. Although the recent transformation of coral‐reef assemblages is unprecedented on ecological timescales, determining whether modern coral reefs have truly reached a novel ecosystem state requires evaluating the dynamics of reef composition over much longer periods of time. Here, we provide a geologic perspective on the shifting composition of Florida's reefs by reconstructing the millennial‐scale spatial and temporal variability in reef assemblages using 59 Holocene reef cores collected throughout the Florida Keys Reef Tract (FKRT). We then compare the relative abundances of reef‐building species in the Holocene reef framework to data from contemporary reef surveys to determine how much Florida's modern reef assemblages have diverged from long‐term baselines. We show that the composition of Florida's reefs was, until recently, remarkably stable over the last 8000 yr. The same corals that have dominated shallow‐water reefs throughout the western Atlantic for hundreds of thousands of years, Acropora palmata, Orbicella spp., and other massive coral taxa, accounted for nearly 90% of Florida's Holocene reef framework. In contrast, the species that now have the highest relative abundances on the FKRT, primarily Porites astreoides and Siderastrea siderea, were rare in the reef framework, suggesting that recent shifts in species assemblages are unprecedented over millennial timescales. Although it may not be possible to return coral reefs to pre‐Anthropocene states, our results suggest that coral‐reef management focused on the conservation and restoration of the reef‐building species of the past, will optimize efforts to preserve coral reefs, and the valuable ecosystem services they provide into the future.

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Regional Quaternary submarine geomorphology in the Florida Keys

Cited by 43 publications

References 45 publications

Ecological Shifts along the Florida Reef Tract: The Past as a Key to the Future

Ecological Shifts along the Florida Reef Tract: The Past as a Key to the Future

Habitat availability and depth‐driven population demographics regulate reproductive output of a coral reef fish

The unprecedented loss of Florida's reef‐building corals and the emergence of a novel coral‐reef assemblage

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