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Karenia brevis; algal blooms; anthropogenic activities; coasts; environment; issues and policy; lakes; nitrogen; nutrient management; public health; river flow; rivers; time series analysis; total nitrogen; water quality; watersheds; Florida
Abstract:
... Karenia brevis blooms on Florida's Gulf Coast severely affect regional ecosystems, coastal economies, and public health, and formulating effective management and policy strategies to address these blooms requires an advanced understanding of the processes driving them. Recent research suggests that natural processes explain offshore bloom initiation and shoreward transport, while anthropogenic nut ...
... The Apalachicola–Chattahoochee–Flint (ACF) basin is arguably the most litigated interstate river system in the eastern United States. Given the complicated demands for water use within this basin, it has been difficult to ascertain if the recent multi-decadal decline in streamflow is a product of human disturbance, changing climate, natural variability, or some combination of the above factors. To ...
... The habitat of beach-nesting birds often overlaps with areas heavily used for human recreation. Human activity has been linked to negative behavioral and reproductive consequences for shorebirds; therefore, it is important for managers to understand how to best mitigate disturbance. In Florida, there is concern that human disturbance negatively affects the state-threatened population of Snowy Plov ...
Marie Cindy Lebrasse; Blake A. Schaeffer; Richard C. Zimmerman; Victoria J. Hill; Megan M. Coffer; Peter J. Whitman; Wilson B. Salls; David D. Graybill; Christopher L. Osburn
... Seagrass meadows are degraded globally and continue to decline in areal extent due to human pressures and climate change. This study used the bio-optical model GrassLight to explore the impact of climate change and anthropogenic stressors on seagrass extent, leaf area index (LAI) and belowground organic carbon (BGC) in St. Joseph Bay, Florida, using water quality data and remotely-sensed sea surfa ...
... Natural habitats have been converted to urban areas across the globe such that many landscapes now represent matrices of developed and protected lands. As urbanization continues to expand, associated pressures on wildlife will increase, including effects on animals in adjacent protected habitats. For prey species (e.g., ungulates), an understanding of the ecological impacts of urbanization is typi ...
agricultural land; anthropogenic activities; canopy; climate change; ecosystems; evapotranspiration; grasslands; hurricanes; leaf area index; photosynthetically active radiation; satellites; space and time; spatial data; surface temperature; vegetation cover; watersheds; Florida
Abstract:
... Changes of biophysical and biochemical features in canopy cover over space and time can be used to elucidate watershed resilience to climate change or extreme weather. Geospatial technologies such as satellite remote sensing are helpful to identify such vegetation dynamics. This paper investigates the landfall impact of Hurricane Irma on canopy cover in the Santa Fe River Basin (Florida), which oc ...
... PREMISE: The Caribbean islands are in the top five biodiversity hotspots on the planet; however, the biogeographic history of the seasonally dry tropical forest (SDTF) there is poorly studied. Consolea consists of nine species of dioecious, hummingbird‐pollinated tree cacti endemic to the West Indies, which form a conspicuous element of the SDTF. Several species are threatened by anthropogenic dis ...
... The John J. Pescatello Torchwood Hammock Preserve, comprising 97 ha, is located on Little Torch Key, 24 39” N Latitude, 81 23” Longitude. The preserve was surveyed for vascular plant species in February, 2012, and again in July, 2013. The vascular flora of the preserve consists of 126 species within 86 genera and 45 families. The largest families in the flora were the Poaceae (18), Fabaceae (10), ...
Carcharhinus limbatus; acoustics; anthropogenic activities; coasts; juveniles; lemons; marine science; migratory species; young of the year; Caribbean; Florida
Abstract:
... Broad‐scale movements (10s–100s km) of highly migratory species, such as sharks, present unique management challenges as fish migrate across international boundaries, thereby exposing them to different levels of anthropogenic pressure. Lemon sharks and blacktip sharks are well‐studied throughout their range in the western North Atlantic, but broad‐scale movements in the Caribbean region are largel ...
anthropogenic activities; birds; compliance; conservation areas; forage; humans; loaves; nests; people; solar radiation; Florida; France
Abstract:
... Fort De Soto Park (Pinellas County, Florida) encompasses several barrier islands and is accessible to the public by road. Over 32 ha of beach are closed to the general public to allow birds to nest, loaf, and forage without human disturbance. The objective of this study was to use video monitoring of the closed area to determine when intrusions into the protected area occurred and to see if public ...
... Three species of sparids in the western Atlantic, sheepshead (Archosargus probatocephalus), sea bream (A. rhomboidalis), and pinfish (Lagodon rhomboides), share overlapping habitats, spawning seasons, and spawning grounds, providing opportunities for interaction among these species. Three regions of mitochondrial DNA and three nuclear DNA intron sequences were used to construct the genetic relatio ...
... There are a few baseline reef‐systems available for understanding the microbiology of healthy coral reefs and their surrounding seawater. Here, we examined the seawater microbial ecology of 25 Northern Caribbean reefs varying in human impact and protection in Cuba and the Florida Keys, USA, by measuring nutrient concentrations, microbial abundances, and respiration rates as well as sequencing bact ...
... Hydrology is a critical driver controlling mangrove wetlands structural and functional attributes at different spatial and temporal scales. Yet, human activities have negatively affected hydrology, causing mangrove diebacks and coverage loss worldwide. In fact, the assessment of mangrove water budgets, impacted by natural and human disturbances, is limited due to a lack of long-term data and infor ...
... Seagrasses provide and maintain critical ecosystem functions and support rich biodiversity, yet they are highly susceptible to anthropogenic impacts. From 2002 to 2016 seagrasses were surveyed monthly or bimonthly for presence in the Indian River Lagoon (IRL) and Loxahatchee River Estuary (LRE) along the east coast of Florida. These data were used to assess seasonal seagrass presence patterns (i.e ...
... Anthropogenic disturbance has the potential to influence metapopulation dynamics by altering habitat quality and connectivity. In particular, species with limited vagility and specific habitat preferences, such as the Florida scrub lizard (Sceloporus woodi), are likely to be affected by landscape-altering events. In the Ocala National Forest (ONF) of central Florida, subpopulations of Florida scru ...
... Ephemeral ponds in the Munson Sand Hills region (MSH) of Apalachicola National Forest (ANF) are an essential resource in the life cycles of a variety of amphibian species, a number of which are threatened or endangered. Various types of human activities have disturbed some of these ponds threatening their survival. Although extensive research has been done on the biology of amphibians in the ponds ...
... The widespread use of electronic tags allows us to ask new questions regarding how and why animal movements vary across ecosystems. Common Snook (Centropomus undecimalis) is a tropical estuarine sportfish that have been well studied throughout the state of Florida, including multiple acoustic telemetry studies. Here, we ask; do the spawning behaviors of Common Snook vary across two Florida coastal ...
Chelonia mydas; anthropogenic activities; data collection; eggs; equipment; females; nesting; night vision; oviposition; sand; sea turtles; stroke; video recording; Florida
Abstract:
... Nesting in sea turtles involves a series of behavioral stages in which females ascend a coastal beach, move sand to bury and conceal eggs, and return to the sea. We created a partial ethogram of nesting stages in Green Sea Turtles (Chelonia mydas) from a central Florida Atlantic beach. We documented nesting stages through both in-person data collection and use of night-vision video-recording equip ...
... Coastal areas are used by both marine turtles and humans which may result in marine turtle nesting grounds being exposed to human activities like coastal modifications. Several studies have investigated the effects of specific types of coastal modifications on marine turtles and their habitat. However, limited information exists on cumulative exposure of nesting grounds to coastal modifications. T ...
... The tung tree, Vernicia fordii (Herbert Kenneth Airy Shaw), is a woody species native to South-East Asia (from Central and Southwest China to North Vietnam), which is also cultivated in China for the production of industrial oil. It is listed as a Category II invasive plant species in Florida, USA. During the introduction period of the tung tree from China to other countries in the last century, i ...
... A foraminiferal proxy for seagrass abundance was developed, tested and used to construct a record of seagrass variability for Florida Bay, USA, since its initial flooding ~ 3800 cal years BP. Of 76 species recorded in the Bay, 13 seagrass-associated foraminifera were identified based on previously observed occurrences in seagrass beds of the region. Species that occurred more in seagrass beds than ...
anthropogenic activities; case studies; coastal zone management; coasts; decision support systems; mining; regional planning; sand; sea level; Florida
Abstract:
... The temporal and spatial scales controlling the morphodynamics of barrier-inlet systems are critical components of regional sediment management practice. This paper discusses regional sediment management methods employed at multiple barrier-inlet systems, with case studies from West-Central Florida. A decision-support tool is proposed for regional sediment management with discussion of its applica ...
... Short sediment cores (80–100 cm) from three Florida (USA) lakes (Sheelar, Wauberg, and Apopka) that range in trophic status, were analyzed for total organic carbon (TOC), total nitrogen, stable isotopes of organic carbon (δ¹³CTOC) and biomarkers (n-alkanes and fatty acids), to identify the sources of organic matter in the lake deposits, and to link changes in primary productivity to anthropogenic ...
Everglades National Park; Opsanus beta; acoustics; anthropogenic activities; bioactive properties; climatic factors; data collection; ecological restoration; ecosystems; environmental indicators; estuaries; fish; freshwater; habitats; hydrologic data; indicator species; life history; males; monitoring; nesting; nests; physiology; probability; salinity; water quality; Florida; Gulf of Mexico
Abstract:
... The Florida Everglades have been subjected to decades of human disturbance directly and indirectly related to freshwater management. As a result, intensive efforts directed at restoring water quality in the region have been congressionally mandated. Long-term hydrological monitoring of the Florida Bay Estuary has significantly improved scientific understanding of physical environmental processes w ...
... A central organizing concept in estuarine biogeochemistry is net ecosystem production (NEP). However, estimates of seasonal and interannual variability of whole-system estuarine NEP, which provide insight into how estuaries respond to climatic and anthropogenic forcing, are rare. The main objectives of this study are to (1) determine the seasonal and interannual variability in whole-system NEP of ...
... Excess phosphorus (P) loading due to anthropogenic activities has been identified as a primary cause of surface water eutrophication, but it is controversial whether P is a contributor to groundwater contamination. In this study, subsurface transport of P to groundwater and its environmental risk across different land uses was investigated in a karstic springs basin, Florida, USA. Eleven sites inc ...
... This is a description and review of the coastal dune lakes of Northwest Florida. Coastal dune lakes are globally rare, tannin-stained, and shallow irregularly shaped lakes within 2 miles of the coast. The lakes in Northwest Florida are unique ecosystems among costal dune lakes of the world due to an intermittent connection to the Gulf of Mexico during high tides, rain events, or storm surge. The c ...
... 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 ecol ...
... The global‐scale degradation of coral reefs has reached a critical threshold wherein further declines threaten both ecological functionality and the persistence of reef structure. Geological records can provide valuable insights into the long‐term controls on reef development that may be key to solving the modern coral‐reef crisis. Our analyses of new and existing coral‐reef cores from throughout ...
... Compared to other terrestrial environments, coastal “blue carbon” habitats such as salt marshes and mangrove forests sequester disproportionately large amounts of carbon as standing plant biomass and peat deposits. This study quantified organic carbon stocks in 16 salt marshes, salt barrens, and mangrove forests in Tampa Bay, Florida, USA. The sites included natural, restored, and created wetlands ...
... Anthropogenic activities are placing increasing pressure on many species, particularly those that rely on more than one ecosystem. River herring (alewife, Alosa pseudoharengus and blueback herring, A. aestivalis collectively) are anadromous fishes that reproduce in rivers and streams of eastern North America and migrate to the western Atlantic Ocean. Here, we use data from single nucleotide polymo ...
... The proximity of seagrass meadows to centers of human activity makes them vulnerable to a variety of habitat degrading insults. Physical scarring has long been recognized as an important but difficult-to-quantify source of habitat fragmentation and seagrass loss. We present a pixel-based algorithm to detect seafloor propeller seagrass scars in shallow water that promises to automate the detection ...
... Strumigenys gundlachi and Strumigenys eggersi are tiny predatory ants that feed on minute soil arthropods. Both these closely related New World species were originally described from Caribbean islands (S. gundlachi from Cuba, S. eggersi from St Thomas) and both are known from South and Central America, the West Indies, and peninsular Florida. Recently, exotic Old World populations of S. eggersi we ...
anthropogenic activities; anthropogenic stressors; biocenosis; cropland; environmental indicators; estuaries; eutrophication; fish; fisheries management; habitat conservation; invertebrates; land use; landscapes; linear models; river deltas; rivers; shorelines; toxicity; watersheds; Florida; Gulf of Mexico
Abstract:
... The northern Gulf of Mexico (GoM) spans five U.S. states and encompasses estuaries that vary greatly in size, shape, upstream river input, eutrophication status, and biotic communities. Given the variability among these estuaries, assessing their biological condition relative to anthropogenic stressors is challenging, but important to regional fisheries management and habitat conservation initiati ...
Annie Bracey; Simeon Lisovski; David Moore; Ann McKellar; Elizabeth Craig; Sumner Matteson; Fred Strand; Jeffrey Costa; Cynthia Pekarik; Paul Curtis; Gerald Niemi; Francesca Cuthbert
Sterna hirundo; anthropogenic activities; at-risk population; birds; breeding; climate change; coasts; habitat destruction; lakes; migratory behavior; migratory connectivity; mortality; nesting; philopatry; population dynamics; predation; stopover sites; storms; wintering grounds; Central America; Florida; Great Lakes; Great Lakes region; Gulf of Mexico; Manitoba; Peru
Abstract:
... Common Terns (Sterna hirundo) breeding at inland lakes in North America have experienced significant population declines since the 1960s. Although management actions aimed at mitigating effects of habitat loss and predation have been largely effective, numbers continue to decline, which suggests that the population may be limited during the nonbreeding season. Between 2013 and 2015, we used light- ...
... The deterioration of coastal habitats due to anthropogenic activities is being caused by nutrient rich runoff which will likely result in more frequent and severe extremes in seawater pH. The embryonic and larval stages of many coastal species may not have the physiological ability to tolerate these extreme shifts in pH forecasted for future oceans. The stone crab, Menippe mercenaria, was used to ...
anthropogenic activities; aquifers; groundwater; groundwater flow; hydraulic conductivity; mathematical models; mixing; national parks; prediction; seepage; surface water; water conservation; water quality; Florida
Abstract:
... The effects of surface water flow system changes caused by constructing water‐conservation areas and canals in southeast Florida on groundwater quality under the Atlantic Coastal Ridge was investigated with numerical modeling. Water quality data were used to delineate a zone of groundwater with low total dissolved solids (TDS) within the Biscayne aquifer under the ridge. The delineated zone has th ...
... Slagle ZJ, Allen MS. 2018. Should we plant macrophytes? Restored habitat use by the fish community of Lake Apopka, Florida. Lake Reserv Manage. 00:00–00. Freshwater resources are impaired worldwide, and managers frequently use habitat restoration to mitigate anthropogenic disturbances to freshwater systems. Restoration attempts have not often been evaluated with respect to their benefits to the sp ...
... The term “anthropocene” (Crutzen, 2002) refers to our current geological epoch and illustrates the manifold influences of human existence and actions on geology and evolution. Ornamentals are a true anthropogenic product solely manufactured to please the eye of the beholder. They are produced and traded all over the globe thus opening gateways for viruses. We investigated consequences of anthropog ...
... Urban ecosystems provide habitat for a variety of amphibian and reptile species, but in most places, these communities are understudied. Gradients of urbanization have been used to examine how herpetofaunal communities respond to anthropogenic disturbance. We used visual-encounter surveys along human-made canals that track a gradient of urbanization as a system to examine changes in aquatic and se ...
... Common bottlenose dolphins (Tursiops truncatus) use complex acoustic behaviours for communication, group cohesion and foraging. Ambient noise from natural and anthropogenic sources has implications for the acoustic behaviour of dolphins, and research shows that average ambient noise levels alter dolphin acoustic behaviour. However, when background noise levels are highly variable, the relationship ...
... In Southwest Florida, a variety of human impacts had caused widespread losses of seagrass coverage from historical conditions. St. Joseph Sound and Clearwater Harbor lost approximately 24 and 51%, respectively, of their seagrass coverage between 1950 and 1999, while Tampa Bay and Sarasota Bay had lost 46% and 15%, respectively, of their seagrass coverage between 1950 and the 1980s. However, over t ...
... Seagrasses are the foundation of many coastal ecosystems and are in global decline because of anthropogenic impacts. For the Indian River Lagoon (Florida, U.S.A.), we developed competing multistate statistical models to quantify how environmental factors (surrounding land use, water depth, and time [year]) influenced the variability of seagrass state dynamics from 2003 to 2014 while accounting for ...
Solenopsis invicta; Wasmannia auropunctata; ant control; anthropogenic activities; control methods; dew; field experimentation; fire ants; habitat destruction; habitats; hydrophobicity; insecticides; natural enemies; population density; Alabama; Florida
Abstract:
... The red imported fire ant, Solenopsis invicta (Buren), left most of its natural enemies behind in South America when it arrived in Mobile, AL, in the 1930s and spread rapidly throughout the southeastern United States, reaching population levels up to 10 times those found in South America. The large population densities and propensity for disturbed habitats led to direct conflict with human activit ...
anthropogenic activities; biomass; coastal plant communities; coasts; drying; greenhouse experimentation; groundwater; halophytes; land use change; plant competition; saline soils; salt tolerance; sea level; soil salinity; stomatal conductance; water salinity; Florida
Abstract:
... Sea level rise (SLR) and land-use change are working together to change coastal communities around the world. Along Florida’s coast, SLR and large-scale drying are increasing groundwater salinity, resulting in halophytic (salt-tolerant) species colonizing glycophytic (salt-intolerant) communities. We hypothesized that halophytes can contribute to increased soil salinity as they move into glycophyt ...
Anas fulvigula; Anas platyrhynchos; anthropogenic activities; coasts; ducks; genetic analysis; habitat destruction; habitats; hybridization; hybrids; introduced species; marshes; microsatellite repeats; monitoring; Florida; Louisiana; South Carolina; Texas
Abstract:
... Hybridization between species that do not normally interbreed has increased due to human impacts on natural environments, such as habitat alteration or introductions of nonnative species. In particular, the introduction of Mallards (Anas platyrhynchos) globally has led to hybridization with many duck species. In the southeastern United States, hybridization with Mallards is a potential threat to t ...
Caretta caretta; anthropogenic activities; coasts; haplotypes; humans; mitochondria; mitochondrial DNA; Adriatic Sea; Florida; Gulf of Mexico; Mediterranean Sea; Mediterranean region
Abstract:
... The Mediterranean Sea is an important regional management unit (RMU) for the conservation of the loggerhead turtle (Caretta caretta) because it hosts both nesting and foraging grounds for this species. In this study, attention was focused on an important foraging ground located on the southern Italian coast of the Adriatic Sea, the Gulf of Manfredonia. In this area, C. caretta is threatened by a h ...
... Nitrogen (N) from anthropogenic sources has contaminated groundwater used as drinking water in addition to impairing water quality and ecosystem health of karst springs. The Nitrogen Source Inventory and Loading Tool (NSILT) was developed as an ArcGIS and spreadsheet-based approach that provides spatial estimates of current nitrogen (N) inputs to the land surface and loads to groundwater from nonp ...
adsorption; anthropogenic activities; carbonates; chlorophyll; data collection; estuaries; freshwater; human population; landscapes; monitoring; phosphorus; pollution load; rivers; rowcrops; sediments; septic systems; sewage effluent; stormwater; urbanization; water quality; water quality standards; watersheds; Florida
Abstract:
... Estuaries are increasingly affected by deteriorating water quality associated with a burgeoning human population. As such, there is a need to establish water quality baselines and elucidate whether shifts in water quality are attributed to anthropogenic activities or the dynamic nature of estuaries. Here we investigate an extensive water quality dataset collected from 2006 to 2015 within the Loxah ...
Jacqueline T. Bangma; John A. Bowden; Arnold M. Brunell; Ian Christie; Brendan Finnell; Matthew P. Guillette; Martin Jones; Russell H. Lowers; Thomas R. Rainwater; Jessica L. Reiner; Philip M. Wilkinson; Louis J. Guillette Jr
... The present study aimed to quantitate 15 perfluoroalkyl acids (PFAAs) in 125 adult American alligators at 12 sites across the southeastern United States. Of those 15 PFAAs, 9 were detected in 65% to 100% of samples: perfluorooctanoic acid, perfluorononanoic acid, perfluorodecanoic acid (PFDA), perfluoroundecanoic acid (PFUnA), perfluorododecanoic acid, perfluorotridecanoic acid (PFTriA), perfluoro ...