Linking Land Use to Atlantic Salmon Production to Guide Recovery Planning

2019 ◽  
Vol 39 (4) ◽  
pp. 664-675
Author(s):  
Heather D. Bowlby ◽  
A. Jamie F. Gibson
Keyword(s):  
Land Use ◽  
Atlantic Salmon ◽  
Recovery Planning ◽  
Salmon Production

Landscape and Land Use Effects on Atlantic Salmon

2010 ◽  
pp. 333-349
Author(s):  
Ola Ugedal ◽  
Anders G. Finstad
Keyword(s):  
Land Use ◽  
Atlantic Salmon ◽  
Land Use Effects

scholarly journals Modeling the effects of alternative mitigation measures on Atlantic salmon production in a regulated river

2017 ◽  
Vol 17 ◽  
pp. 32-41 ◽  
Author(s):  
Ana Adeva Bustos ◽  
Richard David Hedger ◽  
Hans-Petter Fjeldstad ◽  
Knut Alfredsen ◽  
Håkon Sundt ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Regulated River ◽  
Mitigation Measures ◽  
Salmon Production

TÉCNICAS DE GEOPROCESSAMENTO NA CARACTERIZAÇÃO DE APPS NUMA MICROBACIA, EM FUNÇÃO DA LEGISLAÇÃO AMBIENTAL

2017 ◽  
Vol 32 (2) ◽  
pp. 184
Author(s):  
Sergio Campos ◽  
Gabriel Rondina Pupo da Silveira ◽  
Yara Manfrin Garcia ◽  
Mariana De Campos ◽  
Marcelo Campos
Keyword(s):  
Land Use ◽  
Supervised Classification ◽  
Satellite Image ◽  
Geographical Information ◽  
Environmental Legislation ◽  
Environmental Preservation ◽  
Recovery Planning ◽  
Short Time

Esse trabalho objetivou a utilização de técnicas de geoprocessamento na discriminação de classes de uso e ocupação do solo em áreas de APP, permitindo a constatação de futuras intervenções antrópicas que auxiliarão em fiscalizações ambientais. A microbacia com 183,19ha, situa-se entre as coordenadas geográficas 22o 44’ 41” a 22o  45’ 41” de latitude S e 48o 24’ 13” a 48o 25’ 01” de longitude WGr.  A base cartográfica utilizadas foi a carta topográfica de Botucatu para o georreferenciamento da imagem de satélite de 2008. O SIG-IDRISI Selva foi utilizado na classificação supervisionada e a determinação dos mapas temáticos. O uso da terra mostrou que a pastagem ocupa a maior parte da área (85,61%), mostrando com isso a predominância da pecuária regional. A imagem de satélite e a utilização do SIG mostraram-se importantes ferramentas, fornecendo resultados confiáveis num pequeno intervalo de tempo. Os dados obtidos auxiliarão nos futuros planejamentos de recuperação da microbacia, possibilitando verificar que a área não vem sendo ambientalmente preservada, pois a mesma apresenta somente 14,38% de vegetação e água, sendo que o mínimo exigido pela legislação do Código Florestal Brasileiro vigente é de 20%.PALAVRAS-CHAVE: Legislação ambiental, sistema de informação geográfica, preservação ambiental. GEOPROCESSING TECHNIQUES IN THE CHARACTERIZATION OF APPS IN MICROBABY, IN THE FUNCTION OF ENVIRONMENTAL LEGISLATIONABSTRACT: This work aimed at the use of geoprocessing techniques in the discrimination of classes of land use and occupation in areas of PPA, allowing the confirmation of future anthropogenic interventions that will aid in environmental inspections. The microbasin with 183.19 ha lies between the geographic coordinates 22o 44' 41"at 22o 45' 41" latitude S and 48o 24' 13"at 48o 25' 01" WGr longitude. The cartographic base used was the Botucatu topographic chart for the georeferencing of the satellite image of 2008. The SIG-IDRISI Selva was used in the supervised classification and the determination of thematic maps. Land use showed that pasture occupies most of the area (85.61%), thus showing the predominance of regional livestock. Satellite imagery and the use of GIS have proved to be important tools, providing reliable results in a short time. The data obtained will aid in the future recovery planning of the microbasin, making it possible to verify that the area is not environmentally preserved, since it presents only 14.38% of vegetation and water, and the minimum required by the Brazilian Forestry Code is of 20%.KEYWORDS: Environmental legislation, geographical information system, environmental preservation. 

Practical Biosecurity in Atlantic Salmon Production

2015 ◽  
Vol 27 (3) ◽  
pp. 249-262 ◽  
Author(s):  
Atle Lillehaug ◽  
Nina Santi ◽  
Asgeir Østvik
Keyword(s):  
Atlantic Salmon ◽  
Salmon Production

Multi-scale determinants of secondary production in Atlantic salmon (Salmo salar) streams

1998 ◽  
Vol 55 (S1) ◽  
pp. 201-217 ◽  
Author(s):  
N LeRoy Poff ◽  
Alexander D Huryn
Keyword(s):  
Atlantic Salmon ◽  
Species Conservation ◽  
Quantitative Information ◽  
Critical Aspect ◽  
Multi Scale ◽  
Invertebrate Prey ◽  
Channel Form ◽  
Salmon Production ◽  
Predicted Values ◽  
Local Habitat

Understanding variation in the freshwater production of Atlantic salmon across its range is a critical aspect of the species' conservation, restoration, and management. We focus on how environmental factors operate at four hierarchical scales (region, watershed, reach, local habitat) to influence the production and survivorship of juvenile salmon and the production of their invertebrate food base. Using published, quantitative information about invertebrate production in small, cold streams characteristic of Altantic salmon nursery streams, we estimate expected maximum salmon production will be ca. 9 (range 6-22)g wet mass · m-2 · year -1, which compares favorably with reported literature values of < 1 to 17 g · m-2. We highlight some empirically based, shortcut approaches to estimating invertebrate production that may be particularly useful for evaluating salmonid production across a range of scales. We also consider how availability of invertebrate prey may influence salmon production. As a synthesis, we integrate existing information into a multi-scale framework by making qualitative predictions (hypotheses) about expected patterns of invertebrate and salmon production at different habitat scales. We then develop quantitative, heuristic scenarios that predict (hypothesize) how salmon and invertebrate production will change in response to selected physicochemical and non-trophic habitat limitations operating at the watershed (geology, land use) and reach (channel form, canopy) scales. Predicted values, which fall within the range of observed values for Atlantic salmon streams, demonstrate that a multi-scale habitat perspective can provide important insights into local to regional variation in the production of Atlantic salmon across its range and thus contribute to Atlantic salmon conservation, restoration, and management.

Is Atlantic salmon production limited by number of territories?

2004 ◽  
Vol 65 (4) ◽  
pp. 1047-1055 ◽  
Author(s):  
F. Okland ◽  
E. B. Thorstad ◽  
T. F. Naesje
Keyword(s):  
Atlantic Salmon ◽  
Salmon Production

Demographic Consequences of Precocious Maturation of Atlantic Salmon (Salmo salar)

1984 ◽  
Vol 41 (9) ◽  
pp. 1349-1353 ◽  
Author(s):  
R. A. Myers
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Adult Male ◽  
Sexual Maturation ◽  
Survival Probability ◽  
Economic Loss ◽  
Annual Survival ◽  
Atlantic Salmon Salmo Salar ◽  
Second Year ◽  
Salmon Production

Detailed records of outgoing smolts of Atlantic salmon (Salmo salar) and estimates of the parr population that produced them were used to study the demographic conequences of male precocious sexual maturation in southwest Newfoundland. Approximately 80% of males matured precociously in the stream. Annual survival probability of a male that reproduces precociously is reduced by a median 44%. Precocious maturation delays smolting; the probability of smolting in the second year for a male precocious parr is approximately 13% of that of a female. The economic loss due to precocious maturation is large; 60% of the adult male salmon production is lost due to precocious maturation.

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