GULF AND CARIBBEAN RESEARCH最新文献_第4页

Determining Lesion Progression Rate of Stony Coral Tissue Loss Disease using Structure-from-Motion Photogrammetry 用运动结构摄影测量法测定石珊瑚组织丢失病的病变进展速度

IF 1.1

GULF AND CARIBBEAN RESEARCH Pub Date : 2021-01-01 DOI: 10.18785/gcr.3201.15

F. Elmer, Yuliza D. Cruz, Chris B. Dock, Anna Ortega, Steven Wedel, H. Hertler

引用次数: 0

Diatoms of the Northeastern Gulf of Mexico: Light and Electron Microscope Observations of Sulcatonitzschia, a new Genus of Nitzschioid Diatoms (Bacillariales: Bacillariaceae) with a Transverse Sulcus 墨西哥湾东北部的硅藻:具有横沟的硅藻属(硅藻门:硅藻科)Sulcatonitzschia的光电子显微镜观察

IF 1.1

GULF AND CARIBBEAN RESEARCH Pub Date : 2021-01-01 DOI: 10.18785/GCR.3201.06

J. Nienow, A. Prasad

引用次数: 1

Anthropogenic Sound in the Sea: Are Ascidians Affected? 海洋中的人为声音:海鞘受到影响吗?

IF 1.1

GULF AND CARIBBEAN RESEARCH Pub Date : 2021-01-01 DOI: 10.18785/GCR.3201.02

K. White, L. Ambrosio, C. Edwards

{"title":"Anthropogenic Sound in the Sea: Are Ascidians Affected?","authors":"K. White, L. Ambrosio, C. Edwards","doi":"10.18785/GCR.3201.02","DOIUrl":"https://doi.org/10.18785/GCR.3201.02","url":null,"abstract":"Sound pollution in the marine environment has been increasing largely due to anthropogenic sources such as vessel traffic, coastal development, fossil fuel extraction, and military exercises. Studies determining the effects of anthropogenic sound on marine organisms have mostly focused on vertebrates, namely fish and marine mammals; however, less research has been done to study the effects of sound on marine invertebrates. The goal of this research is to examine the effect of anthropogenic sound on the ascidian Styela plicata (Lesueur, 1823) in Tampa Bay, FL. A total of 48 ascidians were collected from 2 sites with differing amounts of boat traffic and thus different anthropogenic soundscapes. Ascidians were individually exposed to 3 separate stimuli: a recording of a boat motor, a song recording, and a water current to simulate turbulence. Ascidian reactions were recorded as the frequency of siphon closing events and the length of time the siphons remained closed after disturbance. Ascidians from both sites increased the frequency and longevity of siphon closure events in response to anthropogenic stimuli but showed only a minor difference in response between sample sites. Research into the effect of anthropogenic sound on invertebrates such as ascidians and their symbionts may provide a better understanding of larger scale ecological impacts from such disturbances.","PeriodicalId":36764,"journal":{"name":"GULF AND CARIBBEAN RESEARCH","volume":"32 1","pages":"1-7"},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67683489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Review: Formation and Metabolic Function of Coral Rubble Biofilms in the Reef Ecosystem 综述:珊瑚礁生态系统中珊瑚碎石生物膜的形成及其代谢功能

IF 1.1

GULF AND CARIBBEAN RESEARCH Pub Date : 2021-01-01 DOI: 10.18785/gcr.3201.07

Andrés Sánchez-Quinto, L. Falcón

{"title":"Review: Formation and Metabolic Function of Coral Rubble Biofilms in the Reef Ecosystem","authors":"Andrés Sánchez-Quinto, L. Falcón","doi":"10.18785/gcr.3201.07","DOIUrl":"https://doi.org/10.18785/gcr.3201.07","url":null,"abstract":"When coral dies, their calcareous skeletons constitute coral rubble in conjunction with the cementing activity of coralline algae and bacteria, creating a secondary reef structure which takes from years to decades to form. Healthy coral reefs differ from coral—rubble dominated reefs in microbial taxonomic composition and metabolic functional roles. The metabolisms of healthy reefs are dominated by autotrophic pathways, where carbon and nitrogen fixation dominate, while the metabolism of rubble—dominated reefs predominate in degradation of organic matter. Nitrogen fixation is 3 orders of magnitude lower in rubble—dominated reefs than in healthy reefs. Coral—rubble harbors a vast diversity of microbes that can precipitate carbonate through coupling several metabolic processes including photosynthesis, ureolysis, ammonification, denitrification, sulfate reduction, methane oxidation, and anaerobic sulfide oxidation. All these metabolic processes were found in rubble microbial communities, but ammonification and sulfate reduction were most prevalent. Anthropogenic and non—anthropogenic perturbations of healthy coral reefs in the past decades have led to the prevalence of rubble—dominated reefs in areas of the Caribbean where the ecological and functional shifts of the community still need further study.","PeriodicalId":36764,"journal":{"name":"GULF AND CARIBBEAN RESEARCH","volume":"199 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67683765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Feeding Habits of the Non-Native Mayan Cichlid, Mayaheros urophthalmus, in Estuarine Tributaries of Southwest Florida 佛罗里达西南部河口支流中非本地玛雅慈鲷的摄食习性

IF 1.1

GULF AND CARIBBEAN RESEARCH Pub Date : 2021-01-01 DOI: 10.18785/gcr.3201.08

Copley H. Smoak, J. Schmid

{"title":"Feeding Habits of the Non-Native Mayan Cichlid, Mayaheros urophthalmus, in Estuarine Tributaries of Southwest Florida","authors":"Copley H. Smoak, J. Schmid","doi":"10.18785/gcr.3201.08","DOIUrl":"https://doi.org/10.18785/gcr.3201.08","url":null,"abstract":"Foraging habits of the non—native Mayan Cichlid (Mayaheros urophthalmus) were investigated in the tidal tributaries to the Estero Bay and Wiggins Pass estuaries in southwest Florida (USA) during 2011—2013. Dietary analysis was conducted by identifying contents in the digestive tracts of 747 fish and volumetrically measuring the food items. Detritus was the predominant food item by frequency (97–100%), volume (34–48%), and alimentary importance index (47–64%). Bivalves, gastropods, decapod and cirriped crustaceans, coleopterans, serpulid polychaetes, and fish scales frequently (>50%) occurred in samples but volume and importance differed among tributaries. Results indicate that the Mayan Cichlid in southwest Florida tidal tributaries is an opportunistic predator of hard—shelled invertebrates. Although there was considerable overlap in dietary composition, percent volume of food items was significantly different among tributaries during dry seasons. In each tributary, detritus was consumed in greater percentage during the dry season and benthic invertebrates were consumed in greater percentages during the wet season. Consumption of detritus, algae, and plant material may be incidental to predation on benthic invertebrates but more information is needed on digestion and assimilation of food items. Variability in diet among the tributaries in the current study and among other studies was presumably a function of habitat characteristics and the corresponding availability of prey types.","PeriodicalId":36764,"journal":{"name":"GULF AND CARIBBEAN RESEARCH","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67683838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A Sea Turtle Population Assessment for Florida's Big Bend, Northeastern Gulf of Mexico 墨西哥湾东北部佛罗里达州大湾的海龟数量评估

IF 1.1

GULF AND CARIBBEAN RESEARCH Pub Date : 2021-01-01 DOI: 10.18785/gcr.3201.05

Ryan Chabot, R. Welsh, Cody R Mott, Jeffrey R Guertin, B. Shamblin, B. Witherington

{"title":"A Sea Turtle Population Assessment for Florida's Big Bend, Northeastern Gulf of Mexico","authors":"Ryan Chabot, R. Welsh, Cody R Mott, Jeffrey R Guertin, B. Shamblin, B. Witherington","doi":"10.18785/gcr.3201.05","DOIUrl":"https://doi.org/10.18785/gcr.3201.05","url":null,"abstract":"Coastal waters of Florida’s Big Bend, Gulf of Mexico (GOM) once supported one of the largest sea turtle fisheries in the United States. To fill an information gap in this region on abundance and distribution of sea turtles, we used vessel—based distance sampling and active capture methods to characterize current foraging aggregations near the St. Martins Marsh Aquatic Preserve. Over 10 sampling periods between 2012—2018, we completed 513 km of transects and recorded 819 turtles among 4 species—green turtle (Chelonia mydas, n = 624), Kemp’s ridley (Lepidochelys kempii, n = 147), loggerhead (Caretta caretta, n = 47), and a single hawksbill (Eretmochelys imbricata). Turtle densities in 4 study plots within the 200 km2 study site ranged from 57—221 immature green turtles/km2, 16—56 immature Kemp’s ridleys/km2, and 1—14 juvenile—to—adult loggerheads/km2. Of 200 green turtles captured, 67.5% showed skin tumors consistent with fibropapillomatosis, a frequency similar to that from urbanized estuaries of Florida’s east coast. The largest green turtles (> 60 cm straight standard carapace length), abundant in the southern portion of our study area, are of note because this size class is uncommonly recorded within US territorial waters. Analyses of green turtle mtDNA haplotypes found contributions from rookeries in the western GOM, Mexican Caribbean, and Costa Rica. Although Big Bend protected areas were principally designed to conserve marine and coastal habitats, these regulatory zones have also effectively encompassed a hotspot for foraging sea turtles.","PeriodicalId":36764,"journal":{"name":"GULF AND CARIBBEAN RESEARCH","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67683614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Patterns of Dispersion, Movement and Feeding of the Sea Urchin Lytechinus variegatus, and the Potential Implications for Grazing Impact on Live Seagrass 海胆的分散、运动和摄食模式及其对活海草的潜在影响

IF 1.1

GULF AND CARIBBEAN RESEARCH Pub Date : 2021-01-01 DOI: 10.18785/GCR.3201.03

A. Parson, J. Dirnberger, Troy R. Mutchler

{"title":"Patterns of Dispersion, Movement and Feeding of the Sea Urchin Lytechinus variegatus, and the Potential Implications for Grazing Impact on Live Seagrass","authors":"A. Parson, J. Dirnberger, Troy R. Mutchler","doi":"10.18785/GCR.3201.03","DOIUrl":"https://doi.org/10.18785/GCR.3201.03","url":null,"abstract":"The sea urchin Lytechinus variegatus is a known grazer of both living and dead tissue of turtlegrass, Thalassia testudinum, occasionally denuding large areas of seagrass. Field studies have attempted to assess effects of herbivory on seagrass by enclosing urchins at various densities. However, it is unclear how unrestricted urchins affect seagrass at lower densities more typically observed in the field. This study describes movement, feeding, and distribution of L. variegatus within beds of T. testudinum in St. Joseph Bay, Florida (USA) to quantify this urchin’s impact as a seagrass grazer. Urchins were absent from portions of seagrass beds closest to shore, present at low densities midway across the bed, and at highest densities (up to ~5 individuals/m2) at the offshore edge of the bed. Urchins tended not to aggregate, moved twice as rapidly where seagrass cover was reduced, and moved > 20X faster when placed in areas of open sand. Dead seagrass tissue occurred 4—30X more frequently on oral surfaces than living seagrass tissue. Fecal pellets with dead seagrass tissue were > 3X more common than pellets with live seagrass tissue. Injury to seagrass leaves was more common along dead leaf sections than live sections (> 2—10X). Overall, spatial distributions, movement, and diet indicate that L. variegatus at densities observed in this study would tend to have minimal effects on living seagrass. Episodic periods of denuding grassbeds reported in the literature suggest L. variegatus switches to live seagrass tissue as dead tissue becomes scarce during times of high urchin density.","PeriodicalId":36764,"journal":{"name":"GULF AND CARIBBEAN RESEARCH","volume":"4 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67683841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

How a Simple Question About Freshwater Inflow to Estuaries Shaped a Career 一个关于河口淡水流入的简单问题如何塑造了一个职业生涯

IF 1.1

GULF AND CARIBBEAN RESEARCH Pub Date : 2021-01-01 DOI: 10.18785/GCR.3201.04

P. Montagna

引用次数: 3

Spatial Variability of Sediment Amorphous Silica and its Reactivity in a Northern Gulf of Mexico Estuary and Coastal Zone 墨西哥湾北部河口及海岸带沉积物无定形二氧化硅的空间变异性及其反应性

IF 1.1

GULF AND CARIBBEAN RESEARCH Pub Date : 2021-01-01 DOI: 10.18785/gcr.3201.14

Elliot Kemp, Ryan Roseburrough, E. Elliott, J. Krause

引用次数: 2

Diet of the Blacktip Shark (Carcharhinus limbatus) in the Northwestern Gulf of Mexico 墨西哥湾西北部黑鳍鲨（Carcharhinus limbatus）的饮食

IF 1.1

GULF AND CARIBBEAN RESEARCH Pub Date : 2020-10-07 DOI: 10.18785/gcr.3101.12

Sarah R. Alewijnse, R. Wells

{"title":"Diet of the Blacktip Shark (Carcharhinus limbatus) in the Northwestern Gulf of Mexico","authors":"Sarah R. Alewijnse, R. Wells","doi":"10.18785/gcr.3101.12","DOIUrl":"https://doi.org/10.18785/gcr.3101.12","url":null,"abstract":"The stomach contents of 90 blacktip sharks (Carcharhinus limbatus) caught in the northwestern Gulf of Mexico were examined. Stomach contents were identified to the lowest possible taxon, and quantified using percent weight, percent number, percent frequency of occurrence, and percent index of relative importance (IRI). Teleosts were the dominant prey group (98.95% IRI), although most were unidentified (61.70% IRI). Of identified teleost species, Atlantic croaker (Micropogonias undulatus) (28.43% IRI), and Gulf menhaden (Brevoortia patronus) (2.31% IRI) were the most important. Crustaceans (0.65% IRI), mollusks (0.46% IRI), and elasmobranchs (0.03% IRI) formed a minor component of the diet. Suspected shrimp fishery discards were found in 11% of stomachs, highlighting the potential importance of this food source for blacktip sharks. Diet composition did not differ between male and female sharks, but did between juveniles and adults. Juvenile shark diets had greater proportions of unidentified teleost, Clupeidae and Penaeidae, while adult diets had greater proportions of Sciaenidae, Ariidae and cephalopods. Our results were similar, although not identical to, other studies of blacktip shark diets in the northwestern Gulf of Mexico. Of note is our finding of mantis shrimp (Squilla empusa), a species previously unreported in blacktip shark stomach contents. This new finding, the high importance of unidentified teleost, and the lack of asymptote in the prey accumulation curve emphasize the need for further study of the blacktip shark diet in the northwestern Gulf of Mexico.","PeriodicalId":36764,"journal":{"name":"GULF AND CARIBBEAN RESEARCH","volume":"31 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46466149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1