Can La Redonda lagoon (Cuba) be a suitable habitat for largemouth bass (Micopterus salmoides, Lacepède) recovery?

2021 ◽  
Vol 57 ◽  
pp. 15
Author(s):  
Roberto González-De Zayas ◽  
Martín Merino-Ibarra ◽  
Julio A. Lestayo González ◽  
Fermín S. Castillo-Sandoval ◽  
Rosely Peraza-Escarrá
Keyword(s):  
Largemouth Bass ◽  
Water System ◽  
Mean Value ◽  
Suitable Habitat ◽  
Moderate Degree ◽  
Nitrogen And Phosphorus ◽  
Survey Period ◽  
Index Model ◽  
Hypoxic Conditions ◽  
Suitability Index

For decades, La Redonda lagoon was an excellent location for fishing the largemouth bass (Micopterus salmoides, Lacepède) in Cuba. There are indications that the species disappeared from the lagoon in 2009. Three water surveys were carried out in 2013 and 2014. Physicochemical parameters, including nutrients, were measured in all surveys. Chlorophyll a and water transparency were only measured in November 2013. Results showed that this lagoon is a fresh to brackish water system, with common salinization episodes. There were some hypoxic conditions, but mean dissolved oxygen value was above 5.0 ± 2.8 mg L−1 for the entire survey period. The trophic state was evaluated as oligotrophic and Nitrogen and Phosphorus were limiting in most of the survey sites. The Habitat Suitability Index model (HSI) for largemouth bass had a mean value of 0.63 ± 0.02 (moderate degree of suitability). All results showed that bass recovery could be possible in La Redonda lagoon, but management criteria are necessary. The largemouth bass recovery could help to increase visitations of American anglers to this place and a portion of the revenue could be used to conduct environmental monitoring and studies of the largemouth bass ecology in Cuba.

Predicting bycatch hotspots based on suitable habitat derived from fishery-independent data

2020 ◽  
Vol 641 ◽  
pp. 159-175
Author(s):  
J Runnebaum ◽  
KR Tanaka ◽  
L Guan ◽  
J Cao ◽  
L O’Brien ◽  
...  
Keyword(s):  
Habitat Suitability ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Gulf Of Maine ◽  
Homarus Americanus ◽  
Management Tool ◽  
American Lobster ◽  
Suitable Habitat ◽  
Climate Conditions ◽  
Suitability Index

Bycatch remains a global problem in managing sustainable fisheries. A critical aspect of management is understanding the timing and spatial extent of bycatch. Fisheries management often relies on observed bycatch data, which are not always available due to a lack of reporting or observer coverage. Alternatively, analyzing the overlap in suitable habitat for the target and non-target species can provide a spatial management tool to understand where bycatch interactions are likely to occur. Potential bycatch hotspots based on suitable habitat were predicted for cusk Brosme brosme incidentally caught in the Gulf of Maine American lobster Homarus americanus fishery. Data from multiple fisheries-independent surveys were combined in a delta-generalized linear mixed model to generate spatially explicit density estimates for use in an independent habitat suitability index. The habitat suitability indices for American lobster and cusk were then compared to predict potential bycatch hotspot locations. Suitable habitat for American lobster has increased between 1980 and 2013 while suitable habitat for cusk decreased throughout most of the Gulf of Maine, except for Georges Basin and the Great South Channel. The proportion of overlap in suitable habitat varied interannually but decreased slightly in the spring and remained relatively stable in the fall over the time series. As Gulf of Maine temperatures continue to increase, the interactions between American lobster and cusk are predicted to decline as cusk habitat continues to constrict. This framework can contribute to fisheries managers’ understanding of changes in habitat overlap as climate conditions continue to change and alter where bycatch interactions could occur.

The Development of Habitat Suitability Index Model of Class I Endangered Wildlife, Sedirea japonica - A Case Study of Korea National Park of Dadohaehaesang -

2020 ◽  
Vol 32 (1) ◽  
pp. 153-172
Author(s):  
Yun-Jin Shim ◽  
Yong-Su Park ◽  
Rae-Ha Jang ◽  
Young-Jun Yoon ◽  
Sun- Ryoung Kim ◽  
...  
Keyword(s):  
Habitat Suitability ◽  
National Park ◽  
Class I ◽  
Habitat Suitability Index ◽  
Index Model ◽  
Suitability Index

scholarly journals Stress Fracture Influences Bone Resorption marker (u-NTX) in Female Long Distance Runners

2017 ◽  
Vol 38 (14) ◽  
pp. 1070-1075 ◽  
Author(s):  
Shimpei Fujita ◽  
Keishoku Sakuraba ◽  
Atsushi Kubota ◽  
Kenta Wakamatsu ◽  
Natsue Koikawa
Keyword(s):  
Bone Resorption ◽  
Stress Fracture ◽  
Premenopausal Women ◽  
Mean Value ◽  
Bone Resorption Marker ◽  
Distance Runners ◽  
Survey Period ◽  
Long Distance ◽  
Bone Resorption Markers ◽  
The Mean

AbstractIn this study, we aim to clarify the influence based on bone resorption markers at onset of stress fracture. Also, we will clarify the state of the bone resorption markers of female long distance runners who have a history of stress fracture and also ones who routinely practices running long distances. Participants comprised 19 female long distance athletes. The survey period was 2011–2014, and we measured u-NTX as a bone resorption marker at least twice a year, taking the mean±SD of the periodic measured values without stress fracture as the mean value. Measurements were collected sample when stress fractures developed. 132 u-NTX measurements were taken from 19 participants. As a result, the average was 41.03±12.31 nmolBCE/mmolCRE (Q1: 33.15, Q2: 40.55, Q3: 47.95). In six of the 19 participants, u-NTX could be measured following a stress fracture. The mean value of u-NTX for those participants was 40.16±9.10 nmolBCE/mmolCRE, increasing to 64.08±16.07 nmolBCE/mmol CRE with the stress fracture (p<0.01). The findings showed that, in adult female long distance runners, u-NTX values when there was no stress fracture were within the standard value for mean premenopausal women, but increased when the athletes suffered from a stress fracture.

Baseflow recession characterization and groundwater storage trends in northern Taiwan

2017 ◽  
Vol 48 (6) ◽  
pp. 1745-1756 ◽  
Author(s):  
Kun-Ta Lin ◽  
Hsin-Fu Yeh
Keyword(s):  
Water System ◽  
Water Source ◽  
River Basins ◽  
Mean Value ◽  
Strongly Correlated ◽  
Groundwater Storage ◽  
Drainage Time ◽  
Terrestrial Water ◽  
Channel Slope ◽  
Northern Taiwan

Abstract Groundwater is a critical component of the terrestrial water budget and acts as a relatively stable water source in Taiwan. In the present study, river basins' characterization and groundwater storage trends in northern Taiwan are analyzed using the Brutsaert method. As groundwater storage sustains baseflows in a water system during dry periods, it can be assessed directly from the streamflow record. The characteristic drainage time scale value, K, varied between 34 and 84 days, with a mean value of 54 days and a standard deviation of 16 days. From correlation analysis, K is strongly correlated with the main channel slope. Based on annual values of groundwater storage over the period of record, five subbasins showed downward trends, ranging from −0.053 to −0.950 mm/year, and three subbasins exhibited upward trends, ranging from 0.111 to 0.141 mm/year. During the period of 2000–2014, the groundwater storage trends in northern Taiwan had an obvious spatial distribution. River basins with significant negative trends (mean value of −2.729 mm/year) are located in the northeast part of the study area. In contrast, the subbasins in the northwest part all showed positive trends (mean value of 0.944 mm/year) in groundwater storage.

scholarly journals Testing a Habitat Suitability Index Model for Boreal Owls in Western Newfoundland, Canada

2016 ◽  
Vol 50 (4) ◽  
pp. 325-337
Author(s):  
Kathrin J. Munro ◽  
Ian G. Warkentin ◽  
Christine M. Doucet
Keyword(s):  
Habitat Suitability ◽  
Habitat Suitability Index ◽  
Index Model ◽  
Suitability Index

Habitat suitability index model for the eastern barred bandicoot, Perameles gunnii

1996 ◽  
Vol 23 (2) ◽  
pp. 221 ◽  
Author(s):  
RP Reading ◽  
TW Clark ◽  
JH Seebeck ◽  
J Pearce
Keyword(s):  
Habitat Suitability ◽  
Habitat Structure ◽  
Captive Breeding ◽  
Simple Relationship ◽  
Habitat Suitability Model ◽  
Index Model ◽  
Suitability Index ◽  
Captive Breeding Programme ◽  
Security Values

The eastern barred bandicoot, Perameles gunnii, is functionally extinct on mainland Australia. Conservation of this unique taxon is dependent on reintroduction, based on a managed captive-breeding programme that provides founder animals. Existing reserves at which reintroduction has occurred are too small to support long-term genetically viable populations. Therefore, reintroductions must be made at a number of sites and the resulting populations managed as a metapopulation. A habitat-suitability model has been developed to assess and compare reintroduction sites. This is the first application of this concept to an Australian species. The model is composed of five variables-size, habitat structure, predation, shape and security-values of which are combined in a simple relationship to produce comparable mathematical statements for proposed reintroduction sites. The model has been applied to existing reserves to test their contribution to the recovery programme.

scholarly journals Short Hypoxia Does not Affect Plasma Leptin in Healthy Men under Euglycemic Clamp Conditions

2009 ◽  
Vol 2009 ◽  
pp. 1-6
Author(s):  
Andre Schmoller ◽  
Michaela Voss ◽  
Hartmut Gehring ◽  
Sebastian Rudolf ◽  
Ulrich Schweiger ◽  
...  
Keyword(s):  
Healthy Subjects ◽  
Acute Hypoxia ◽  
Moderate Degree ◽  
Weight Regulation ◽  
Body Weight Regulation ◽  
Normoxic Condition ◽  
Endocrine Control ◽  
Healthy Men ◽  
Hypoxic Conditions ◽  
Plasma Leptin

Leptin is involved in the endocrine control of energy expenditure and body weight regulation. Previous studies emphasize a relationship between hypoxic states and leptin concentrations. The aim of this study was to investigate the effects of acute hypoxia on leptin concentrations in healthy subjects. We examined 14 healthy men. Hypoxic conditions were induced by decreasing oxygen saturation to 75% for 30 minutes. Plasma leptin concentrations were determined at baseline, after 3 hours of euglycemic clamping, during hypoxia, and repeatedly the following 2.5 hours thereafter. Our results show an increase of plasma leptin concentrations in the course of 6 hours of hyperinsulinemic-euglycemic clamping which may reflect diurnal rhythmicity. Notwithstanding, there was no difference between levels of leptin in the hypoxic and the normoxic condition (). Since we did not find any significant changes in leptin responses upon hypoxia, plasma leptin levels do not seem to be affected by short hypoxic episodes of moderate degree.

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