ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
  • GCFI  (2.950)
  • Conservation  (1.003)
  • 2020-2022  (3.953)
Sammlung
Schlagwörter
Verlag/Herausgeber
Erscheinungszeitraum
Jahr
  • 1
    facet.materialart.
    Unbekannt
    Pacific Islands: 30 by 30 (2021)
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/27119 | 25 | 2021-02-14 02:42:59 | 27119 | International Collective in Support of Fishworkers
    Details
    Publikationsdatum: 2021-07-26
    Beschreibung: Renewed calls for marine conservation must not bulldoze the democratic route that has allowed small island nations to improve fisheries and incomes without damaging the marine ecology. I wanted to share some concerns regarding the danger that threatens to disrupt the management of the Pacific Islands’ signature fisheries and main independent source of income. There have been renewed calls for 30 per cent marine protected areas (MPAs) that sound suspiciously over-simplistic. Community-conserved areas come at many scales and the Pacific Islands’ chances of ensuring a multinational indigenous conserved area are threatened.
    Schlagwort(e): Conservation ; Fisheries ; ICSF ; samudra Report ; Pacific Islands ; MPA ; conservation ; income ; community conserved areas ; marine conservation
    Repository-Name: AquaDocs
    Materialart: article
    Format: application/pdf
    Format: application/pdf
    Format: 53-54
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
  • 2
    facet.materialart.
    Unbekannt
    Legislación e instrumentos de manejo existentes para la protección de los fondos marinos en la Plataforma Continental Argentina (2021)
    In:  esteban@inidep.edu.ar | http://aquaticcommons.org/id/eprint/27157 | 125 | 2020-12-12 13:03:17 | 27157 | Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Mar del Plata, Argentina
    Details
    Publikationsdatum: 2021-07-26
    Beschreibung: Se presenta un compendio de instrumentos vinculantes y no vinculantes referidos al manejo y protección de los fondos marinos y/o de los invertebrados bentónicos de la Plataforma Continental Argentina (PCA). Se analizaron leyes nacionales y acuerdos internacionales en los cuales la Argentina es signataria, así como declaraciones de FAO que establecen principios y normas aplicables a la conservación, ordenación y desarrollo de las pesquerías y ecosistemas asociados. Sobre la base de esta selección bibliográfica se analizó la evolución de las medidas a lo largo del tiempo en función del contexto internacional, a fin de esclarecer cuáles son los faltantes y los logros obtenidos en este proceso. Se concluye que la Argentina avanzó en la generación de políticas acordes a los lineamientos mundiales que implican un manejo ecosistémico y un mayor resguardo de la biodiversidad, por ejemplo, implementando Áreas Marinas Protegidas, así como con el enunciado de planes de investigación y fomento que involucran el estudio de los fondos marinos. Sin embargo, para algunas medidas su efectiva ejecución es parcial a partir de la falta de reglamentación y/o financiamiento. Asimismo, queda pendiente la elaboración de planes de acción concretos referidos al estudio del lecho marino incluido en los nuevos límites exteriores de la PCA.
    Schlagwort(e): Conservation ; Law
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 247-263
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
  • 3
    facet.materialart.
    Unbekannt
    Searching the Virtually Extinct Tridacna gigas (Linnaeus, 1758) in the Reefs of Palawan, Philippines (2021)
    In:  njmf19mecha@gmail.com | http://aquaticcommons.org/id/eprint/27088 | 25026 | 2020-08-06 01:21:43 | 27088 | National Fisheries Research and Development Institute, Philippines
    Details
    Publikationsdatum: 2021-07-24
    Beschreibung: Tridacna gigas (Cardiidae: Tridacninae) is the largest extant reef-associated bivalves that occur abundantly in the Indo-West Pacific Region. However, unregulated exploitation had caused localized extinction in many parts of its distribution range. In Palawan, the species was considered virtually extinct in the 1980s, and since then, no study has been done to monitor their status in the wild. In the absence of updated studies about T. gigas, we gathered information through field reports, key informants, and field visits. Within five months of data gathering, we recorded 97 empty shells (14 in pairs and 83 single shells) with 65.86 cm (range: 42-112 cm) average shell length, which were estimated to be from 5 to 〉76 years old. Most (78.36%) of the empty shells were used for decoration and landscaping. On the other hand, 29 live individuals with 73.69 cm (range: 42-109 cm) average shell length were estimated to be 5 to 〉76 years old. Tubbataha Reefs Natural Park and some island resorts harbored the highest number of live T. gigas. The presence of live T. gigas in these areas reflects years of effective management and the resorts’ essential contribution to resource conservation. These remaining live individuals could be used in breeding and restocking programs to restore their lost populations.
    Beschreibung: DOST-PCAARRD
    Beschreibung: QMSR-MRRD-MEC-314-1543
    Schlagwort(e): Conservation ; Fisheries ; bivalves ; conservation ; giant clams ; macroinvertebrates ; mollusks:Tridacna gigas
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1-18
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
  • 4
    facet.materialart.
    Unbekannt
    Status of Fisheries in Agusan Marsh: Lapaz and Talacogon, Agusan del Sur, Mindanao (2021)
    In:  joycebaclayo2016@gmail.com | http://aquaticcommons.org/id/eprint/27092 | 25026 | 2020-08-06 01:27:26 | 27092 | National Fisheries Research and Development Institute, Philippines
    Details
    Publikationsdatum: 2021-07-24
    Beschreibung: In support to policy formulation of fisheries in Agusan Marsh, a stock assessment was conducted for the period of May 2014 to December 2016 using the data collected from Lapaz and Talacogon, Agusan del Sur within the Agusan Marsh. Results showed that Lapaz contributed 54% of the catch over Talacogon. A total of eighteen species, belonging to 13 genera and 11 families with 7 native and 11 introduced species were found in the marsh. Majority of the total catch consisted of Channa striata, Oreochromis niloticus, and Cyprinus carpio (35%, 27%, and 26%, respectively). Osphronemus laticlavius, Glossogobius celebius and Mugil cephalus were listed as seasonal species. An invasive janitor fish (Pterygoplichthys disjunctivus) was observed as by-catch. A strong pattern of high catch rates occurred during the rainy months of January, February, June, and December. Ten types of commonly used fishing gears were found, majority of which include fish pots, set gillnets, electrofishing and set long lines. Multivariate analysis showed similarity in species composition both in Lapaz and Talacogon. Exploitation of dominant species showed unsustainable level for O. niloticus, C. batrachus, C. caprio, andC. gariepinus, mainly due to excessive capture of immaturesized fishes by major fishing gears. The estimated exploitation rate is beyond the optimum level for O. niloticus and C. carpio in both years and followed by C. striata and C. gariepinus in 2016. Only C. bartachus is estimated to be exploited below the optimum level. Generally, the key species in Agusan Marsh are at risk of overfishing, hence, immediate policy measures must be given high attention.
    Schlagwort(e): Conservation ; Ecology ; Fisheries ; Management ; Planning ; Policies ; fisheries ; Agusan Marsh ; dominant species ; exploitation
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 54-82
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
  • 5
    facet.materialart.
    Unbekannt
    Stock Assessment of Arius maculatus (Thurnberg, 1792) (Ariidae, Siluriformes) in Panguil Bay, Northwestern Mindanao (2021)
    In:  nday2jum@yahoo.com | http://aquaticcommons.org/id/eprint/27091 | 25026 | 2020-08-06 01:45:23 | 27091 | National Fisheries Research and Development Institute, Philippines
    Details
    Publikationsdatum: 2021-07-24
    Beschreibung: Arius maculatus, commonly known as spotted catfish and locally known as Tambangongo, has a great potential as an aquaculture species, but there is very limited information known for the stocks in Panguil Bay. This study aimed to assess the wild stocks of A. maculatus, and make an inventory of the fishing boat and gears in two stations in Panguil Bay, namely: Tangub, Misamis Occidental and Baroy, Lanao del Norte. Length frequencies were analyzed to provide estimates of growth, mortality, exploitation ratio, and recruitment pulse of A. maculatus in the bay. A total of 589 boats (324 motorized boats and 265 non-motorized boats) were recorded from the sites. There were 473 units of 15 types of fishing gear used in the sites and 6 types of these were only used in catching A. maculatus. A total of 3,259 specimens were collected for 12 months from the sites. The aquatic habitat of A. maculatus from the two sites was characterized by a pH range of 7.9-8.1, temperature of 28.5-29.1°C, salinity of 13.31-15.9 ppt, dissolved oxygen levels of 4.0-5.41 ppm, and total suspended solid values of 0.1-0.6 g/L. Reproductive biology analysis indicates that eggs start to mature from October to December, then spawning starts from January to March, and the fish fry recruitment starts in April and May. A. maculatus can grow up to 98.95 cm with an asymptotic length of 98.86 cm (K value = 0.35) equivalent to asymptotic weigth of 8,750 g. Mortality Z = 0.99, with natural mortality M = 0.67 and fishing mortality F = 0.33. This study revealed that A. maculatus in Panguil Bay is not over-exploited since the exploitation rate (E = 0.33) is minimal and large individuals can still be collected from the field.
    Beschreibung: National Fisheries Research and Development Institute
    Schlagwort(e): Conservation ; Fisheries ; Management ; Planning ; Policies ; fisheries assessment ; life history ; Panguil Bay ; spotted catfish ; brackishwater
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 40-53
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
  • 6
    facet.materialart.
    Unbekannt
    Growth, Development, and Survival of Portunus pelagicus Larvae and Juveniles in Different Feed Regimens, Rearing Media, and Stocking Densities (2021)
    In:  nitz_sur@yahoo.com | http://aquaticcommons.org/id/eprint/27094 | 25026 | 2020-08-06 01:12:44 | 27094 | National Fisheries Research and Development Institute, Philippines
    Details
    Publikationsdatum: 2021-07-24
    Beschreibung: Various factors in P. pelagicus seed production and grow-out culture were investigated in this study. Experiments were conducted to 1) compare natural and artificial feeds for larval production, 2) evaluate indoor tank and outdoor net cages as rearing media, and 3) assess different stocking densities for grow-out culture. Growth, development, and survival were assessed for the performance of each variable. (I) In larval production, the development of megalopa larvae into crab instar was synchronous in both natural and artificial feed treatments in a 5-day rearing observation. Crab instars began to appear on Day 4 with 27% composition in both feeds. Although survival appeared to be relatively higher in natural feed (43.96 ± 6.04%), this was not significant from survival in artificial feed treatment (33.33 ± 13.34), (t = 0.726, p 〉 0.05). (II) In Phase I grow-out culture, a two-variable design experiment was conducted to assess growth performance and survival of crab juveniles reared in indoor tanks and outdoor net cages at different stocking densities. Specific growth rate (SGR) differed significantly (t = 2.937, p 〈 0.05) between indoor tanks (6.39 ± 0.24%.d-1) and outdoor net cages (8.31 ± 1.11%.d-1). However, mean survival rate was better in indoor tanks (20.83 ± 9.24%) than outdoor net cages (8.94 ± 3.58% only), (t = 2.938, p = 0.015). In terms of stocking density, SGR was highest in 75 ind.m-2 (7.87 ± 2.44%.d-1). However, growth performance and survival of juveniles among different stocking densities were not significantly different (p 〉 0.05). Furthermore, two-factor ANOVA results have shown that growth performance of the juveniles was influenced by both the differences in rearing medium and stocking density, but not in terms of survival (F = 0.120, p = 0.888). (III) In Phase II grow-out culture, juveniles attained highest SGR (3.54 ± 0.56%.d-1) at 5 ind.m-2 stocking density. This was followed by 15 ind.m-2 (3.45 ± 2.39%.d-1) and by 10 ind.m-2 (2.33 ± 0.50%.d-1) (p 〉 0.05). However, survival rate was highest in 15 ind.m-2 (46.67 ± 0.00%), but the differences among other stocking densities were not statistically significant (p 〉 0.05). Overall, results suggest that artificial feed can be an alternative for Artemia in rearing megalopae to crab instar stage. Stocking density in Phase I and II grow-out culture did not substantially affect growth performance and survival of juvenile P. pelagicus. However, higher stocking density increases incidence of cannibalism among reared crabs.
    Schlagwort(e): Aquaculture ; Biology ; Conservation ; Fisheries ; Artemia ; crab juveniles ; Portunus pelagicus ; megalopae ; seed production
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 92-102
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
  • 7
    facet.materialart.
    Unbekannt
    Mass Mortality of Porites Corals on Northern Persian Gulf Reefs due to Sediment-Microbial Interactions (2021)
    In:  http://aquaticcommons.org/id/eprint/26103 | 18131 | 2019-01-25 10:16:06 | 26103 | Islamic Azad University, Bandar Abbas Branch
    Details
    Publikationsdatum: 2021-07-24
    Beschreibung: Little information is available on coral diseases in the Persian Gulf; however, in the recent years, reports of coral diseases increased in particular from Iranian side of the Persian Gulf. In this paper we report a White Mat Disease resulting in mass mortality of Porites colonies at Hormuz Island. This outbreak infected 96% of all Porites colonies and killed 58±30% (mean ± SD) of all Porites tissues.
    Schlagwort(e): Biology ; Conservation ; Ecology ; Environment ; Mass mortality ; Porites sp. ; white mat disease ; coral disease ; disease outbreak ; zoanthid intraction ; coral reef ; Hormuz Island ; Persian Gulf
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 306-310
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
  • 8
    facet.materialart.
    Unbekannt
    Use of least-cost pathways to identify key road segments for Florida panther conservation (2021)
    Florida Fish and Wildlife Conservation Commission, Fish and Wildlife Research Institute | St. Petersburg, FL
    In:  http://aquaticcommons.org/id/eprint/26076 | 704 | 2018-11-06 20:06:47 | 26076 | Florida Fish and Wildlife Conservation Commission
    Details
    Publikationsdatum: 2021-07-24
    Beschreibung: Roads fragment wildlife habitat, and the vehicles that travel them are often a source of wildlife mortality. Often, wildlife populations can absorb this unnatural mortality without suffering declines, but for endangered large mammals like the Florida panther, if their remaining habitat is fragmented or their mortality is increased in other ways (e.g., roadkill), their existence may be imperiled. A landscape approach is critical to identifying key road segments that are important for maintaining unimpeded panther movement. Least-cost pathway (LCP) modeling considers elements within the landscape that facilitate movement and minimize impediments when an animal travels from one area to another. Our analyses identified the most likely LCPs for panthers to use in moving between six major use areas in southwest Florida, and we identified 16 key road segments where these LCPs intersected improved roadways. These intersections correlated well with documented panther roadkill locations and overlapped fixed-kernel panther home ranges. One of our LCPs coursed through an area dominated by citrus groves; this area is strategically located between large blocks of panther habitat, which explains the cluster of panther roadkills at this location. Our analyses supported the habitat stewardship areas of the 2002 Collier County Rural Lands Stewardship Plan; however, we recommend additional protection for the pathway north of County Road 858 and west of State Road 29. We believe that by using a landscape approach, panthers and their habitat can be protected as current road networks are improved, new roads are constructed, and existing panther habitat is altered or disturbed. We did not attempt to map all possible panther–road conflict areas; however, this technique could be applied to other areas, such as possible panther reintroduction areas, as needs arise.
    Schlagwort(e): Conservation ; Florida panther ; Puma concolor coryi ; conservation ; endangered species ; Florida ; Everglades National Park
    Repository-Name: AquaDocs
    Materialart: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 44
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
  • 9
    facet.materialart.
    Unbekannt
    Diversity of Coral Reef Fishes in Larak Island, Persian Gulf (2021)
    In:  http://aquaticcommons.org/id/eprint/26160 | 18131 | 2019-01-24 08:43:32 | 26160 | Islamic Azad University, Bandar Abbas Branch
    Details
    Publikationsdatum: 2021-07-24
    Beschreibung: The coral reefs are one of the most important and rich ecosystems in the world and are considered as major habitat for different species group of fishes. Fourteen islands are found in the northern Persian Gulf including Larak Island of which the coral regions around this island were determined and then for sampling, 6 stations were randomly selected by Manta Tow method in July to December 2010. The identification was conducted using Visual Census technique in 6 stations. A total of 54 species belong to 41 genera and 23 families were identified and amongst them the abundant species group belonged to Pomacentridae family with 11 species. The results indicated that however the stations were far from urban area; the species diversity has been higher.
    Schlagwort(e): Biology ; Conservation ; Ecology ; Fisheries ; Biodiversity ; Coral Reef fish ; Larak Island ; Persian Gulf ; Iran
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 85-92
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
  • 10
    facet.materialart.
    Unbekannt
    Fish assemblages and habitat ecology of River Pinder in central Himalaya, India (2021)
    In:  http://aquaticcommons.org/id/eprint/26440 | 18721 | 2019-05-06 10:16:44 | 26440 | Iranian Fisheries Science Research Institute
    Details
    Publikationsdatum: 2021-07-24
    Beschreibung: Snow-fed River Pinder -a tributary of River Alaknanda in central Himalaya was explored for fish assemblages and habitat specificity. Altogether 27 fish species were reported from three orders, four families and nine genera. Cypriniformes order was dominating followed by Siluriformes and Salmoniformes. Shannon-Weiner diversity index (3.09 to 4.10) and Simpson index of diversity (0.81 to 0.92) of four sites specified strong relationship with species richness. The distribution of fish species showed interesting patterns, 33% species were common to all four sampling sites while 14.80% were restricted to single site and the remaining species were randomly distributed among two or three sampling sites. Habitat variability in the river significantly influenced the species assemblage structure. About 7.40% species were found common to all habitats while 3.70% species were restricted to only single habitat type. The remaining 88.90% of species were dwelling between two to three habitat types. Deep pools recorded maximum species richness followed by shallow pools, while least species richness was recorded in cascade habitats. The conservation status of fish fauna of the river was ascertained by CAMP (Conservation Assessment and Management Plan). Out of 27 species, the status of 8 species was not assessed due to data being deficient, 7 species were categorised as lower risk near threatened, 6 as vulnerable, 5 as endangered while 1 species was exotic.
    Schlagwort(e): Biology ; Fisheries ; Diversity ; Conservation ; Fish diversity ; Fish assemblage ; Species ; Himalayan River
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1-14
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...