Consulta: subjectFacets:"Scales"
Registros recuperados: 13
Data/hora: 01/06/2024 17:37:17

Achieving social-ecological fit through bottom-up collaborative governance: an empirical investigation
Provedor de dados: 7
Autores: Guerrero, Angela M; Australian Research Council Centre of Excellence for Environmental Decisions, University of Queensland; School of Biological Sciences, University of Queensland; a.guerrero@uq.edu.au; McAllister, Ryan R. J.; Commonwealth Scientific and Industrial Research Organisation; ryan.mcallister@csiro.au; Wilson, Kerrie A; Australian Research Council Centre of Excellence for Environmental Decisions, University of Queensland; School of Biological Sciences, University of Queensland; k.wilson2@uq.edu.au.
Significant benefits can arise from collaborative forms of governance that foster self-organization and flexibility. Likewise, governance systems that fit with the extent and complexity of the system under management are considered essential to our ability to solve environmental problems. However, from an empirical perspective the fundamental question of whether self-organized (bottom-up) collaborative forms of governance are able to accomplish adequate fit is unresolved. We used new theory and methodological approaches underpinned by interdisciplinary network analysis to address this gap by investigating three governance challenges that relate to the problem of fit: shared management of ecological resources, management of interconnected ecological...
Tipo: Peer-Reviewed Reports
Palavras-chave: Collaborative governance; Exponential Random Graph Modeling; Networks; Problem of fit; Scales; Social-ecological fit; Social-ecological systems.
Ano: 2015

Акватория и берега Севастополя: экосистемные процессы и услуги обществу
Provedor de dados: 13
Autores: Шадрин, Н. В.; Павлова, Е. В.
В монографии представлены результаты изучения современной экологической ситуации в акватории Севастополя. Рассмотрены также вопросы взаимосвязей функционирования экосистем и социально-экономического развития. Для экологов, экономистов, менеджеров, студентов и жителей Севастополя.
Tipo: Book
Palavras-chave: Ecosystems; Scales; Models; Anthropogenic factors; Eutrophication; Ichthyoplankton; Phytoplankton; Zooplankton; Oil pollution; Litter; Mortality; Coastal zone; Biodiversity; Rivers; Zooplankton; Ecosystems; Scales; Models; Eutrophication; Rivers; Biodiversity; Phytoplankton; Anthropogenic factors; Mortality; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2482; Http://aims.fao.org/aos/agrovoc/c_6838; Http://aims.fao.org/aos/agrovoc/c_4881; Http://aims.fao.org/aos/agrovoc/c_2734; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_33949; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_34996; Http://aims.fao.org/aos/agrovoc/c_4945.
Ano: 1999
URL: http://repository.ibss.org.ua/dspace/handle/99011/381

Aging and growth parameter from the Piaractus mesopotamicus (pacu) from the Cuiabá river, Mato Grosso, Brazil
Provedor de dados: 76
Autores: Ambrosio,Angela M.; Balbi,Thiago J.; Francisco,Talitha M.; Gomes,Luiz C.; Zuliani,Marina S.; Okada,Edson K.
This study has aims to determine the age and to estimate the growth parameters using scales of the species. Individuals of Piaractus mesopotamicus (Holmberg, 1887) used in this study were captured in the commercial fishery conducted in the region, along the year 2006. The model selected to express the growth of the species was the von Bertalanffy Sl= Sl∞*[1-exp-k(t-to)]. To determine if scales are suitable for studying the growth of pacu, we analyzed the relation between standard length (Sl) and the radius of the scales through linear regression. The period of annuli formation was determined analyzing the variations in the marginal increment and evaluating the consistency of the readings through the analysis of the coefficient of variations (CVs) for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth rings; Scales; Von Bertalanffy model; Ford-Walford.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000400004

Manual of Fish Sclerochronology
Provedor de dados: 5
Autores: Panfili, Jacques; De Pontual, Helene; Troadec, Herve; Wrigh, Peter J.
Sclerochronology, the study of calcified structures to reconstruct the past history of living organisms, is central to fish biology and fisheries management. This manual aims to provide an overview of the current theoretical and practical aspects of sclerochronological studies. By providing information on the nature of calcified structures (otoliths, scales, skeleton), their uses in fish research and methods for preparation and examination, the manual constitutes a comprehensive guide for researchers, technicians and students either new to the field or interested in expanding their range of expertise. The enclosed multimedia version (DVD) is supplemented by videos illustrating the main technical procedures with an alternative navigation mode based on...
Tipo: Text
Palavras-chave: Age; Age determination; Biological aging; Chemistry; Growth; Otolith reading; Otoliths; Scale reading; Scales; Skeleton.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00017/12801/9742.pdf

Comparing growth in surface and cave morphs of the species Astyanax mexicanus: insights from scales
Provedor de dados: 5
Autores: Simon, Victor; Elleboode, Romain; Mahe, Kelig; Legendre, Laurent; Ornelas-garcia, Patricia; Espinasa, Luis; Retaux, Sylvie.
Background Life in the darkness of caves is accompanied, throughout phyla, by striking phenotypic changes including the loss or severe reduction in eyes and pigmentation. On the other hand, cave animals have undergone constructive changes, thought to be adaptive, to survive in this extreme environment. The present study addresses the question of the evolution of growth in caves, taking advantage of the comparison between the river-dwelling and the cave-dwelling morphs of the Mexican tetra, Astyanax mexicanus. Results A sclerochronology approach was undertaken to document the growth of the species in these two very distinct habitats. Scales from 158 wild Astyanax mexicanus specimens were analyzed from three caves (Pachón, Tinaja and Subterráneo) and two...
Tipo: Text
Palavras-chave: Cave; Fish; Size; Age; Scales; Growth; Food; Comparative biology; Life history traits.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00412/52337/53124.pdf

Estimation of Age, Growth and Fishing Season of a Palaeolithic Population of Grayling (Thymallus thymallus) Using Scale Analysis
Provedor de dados: 5
Autores: Guillaud, Emilie; Elleboode, Romain; Mahe, Kelig; Bearez, Philippe.
The fish remains sampled from archaeological sites are generally the result of human food refuse; therefore, the study of retrieved fish scales may provide reliable information on the season of capture and on paleoclimate and paleoenvironmental changes. Among Western European freshwater fishes, the grayling, Thymallus thymallus¸ has the most easily recognizable scales and is a commonly recovered species from Paleolithic contexts. This study, therefore, is based on the growth pattern analysis of modern and archaeological scales from grayling specimens. The modern specimens were collected monthly in France (n = 22), Switzerland (n = 16), Finland (n = 20) and Sweden (n = 10). Scale growth patterns were measured using numerical analysis to a high accuracy. The...
Tipo: Text
Palavras-chave: France; Le Taillis des Coteaux; Marginal increment analysis; Scales; Scalimetry; Sclerochronology; Thymallus thymallus; Upper Paleolithic.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00379/48992/49436.pdf

A new species of Tyttocharax (Characiformes: Characidae: Stevardiinae) from the Güejar river, Orinoco river Basin, Colombia
Provedor de dados: 83
Autores: Román-Valencia,César; García-Alzate,Carlos A.; Ruiz-C,Raquel I; Donald,C; Taphorn,B.
A new Tyttocharax species from the Güejar River system, near the Macarena Mountains in Colombia is described. This is the first record for the genus from the Orinoco basin. The combination of the following characters distinguish Tyttocharax metae from its congeners: presence of bony hooks on the pectoral and caudal-fin rays; bony hooks on the anal-fin rays larger than those on the pelvic-fin rays; pectoral-fin rays i,5-6,i; presence of three unbranched dorsal-fin rays; absence of an adipose fin; four scales rows between the anal-fin origin and the lateral line; and four scale rows between the pelvic-fin and the lateral line. Ecological characteristics of the habitat of the new species are also presented.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geographic distribution; Neotropical fish; Osteology; Scales; Teeth.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300004

Osmotic induction marking with Alizarin Red S on juveniles of pejerrey, Odontesthes bonariensis (Atherinopsidae)
Provedor de dados: 83
Autores: Campanella,Daniela; Gárriz,Ángela; Colautti,Darío C.; Somoza,Gustavo M.; Miranda,Leandro A.
Juveniles of pejerrey, Odontesthes bonariensis, were exposed to 0.1% Alizarin Red S (ARS) alone or with a previous immersion in 2.2% saline solution (Osmotic Induction, OI) to enhance the ARS marking method. Fish were marked in the field and immediately released in 1 m3 cages in "La Salada de Monasterio" lagoon, Chascomús, Buenos Aires , Argentina. After 73 days, clear marks were observed in the otoliths, caudal fin rays and scales with both treatments, being the intensity of the signal in the scales of OI+ARS treated fish higher. On the other hand, no marks were observed in the control group on the same structures. Approximately one year post-treatment (385 days), only marks in caudal fin rays were found clearly in OI+ARS treated fish. After this period,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fin rays; Fish tag; Otolith; Scales.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100095

Growth of the Cichla temensis Humboldt, 1821 (Perciformes: Cichlidae) from the middle rio Negro, Amazonas, Brazil
Provedor de dados: 83
Autores: Campos,Caroline Pereira; Freitas,Carlos Edwar de Carvalho; Amadio,Sidineia.
This study aimed to estimate age and growth of the peacock bass Cichla temensis from the rio Negro (Brazilian Amazonia) by analyzing scale annuli. Specimens were captured between October 2011 and September 2012 in the main channel of the river and in adjacent lakes in the municipality of Barcelos, AM, Brazil. Six growth checks were identified on the scales of specimens. The annual variation in body condition observed suggests that fat is accumulated during the dry season. Results for the GSI (gonadosomatic index) showed that peak reproduction occurred in the receding-water period, indicating that the fish had energy deficiencies as a result of reproductive activity. RMI (relative marginal increment) analysis revealed that an annulus is formed once a year...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Hydrological period; Peacock bass; Population parameters; Scales.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000200413

Why should we care about soil fauna?
Provedor de dados: 86
Autores: Anderson,Jonathan Michael.
The reasons why we care about soil fauna are related to their intrinsic, utilitarian and functional values. The intrinsic values embrace aesthetic or moral reasons for conserving below-ground biodiversity. Unfortunately, the protection of soil invertebrates has rarely been a criterion for avoiding changes in land use and management. Utilitarian, or direct use values, have been investigated more extensively for fungi, bacteria and marine invertebrates than for soil fauna. However, some traditional remedies, novel enzymes and pharmaceutical compounds have been derived from earthworms, termites and other groups, and gut symbionts may provide microbial strains with interesting properties for biotechnology. The functional importance of soil invertebrates in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Biological preservation; Ecosystem processes; Functions of soil fauna; Scales.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800006

Chuvas Tardias e Excessivas Retardam o Inicio da Comercialização de Milho na Zona Norte: Os Comerciantes de Pequena Escala Perspectivam Fracas Colheitas Para a Campanha de 2006/07.
Provedor de dados: 31
Autores: Equipe Tecnica do SIMA.
Resultados das Investigações do SIMA- Departamento de Estatística e Departamento de Análise de Políticas MINAG - Direcção de Economia
Tipo: Report
Palavras-chave: Food security; Food policy; Markets; Informal traders; Mozambique; Cellphones; Scales; Transport; Radio; Market information; Crop Production/Industries; Q18.
Ano: 2007
URL: http://purl.umn.edu/55252

Tampão genital de Actinote Hübner, como caráter taxonômico (Lepidoptera, Nymphalidae, Acraeinae)
Provedor de dados: 92
Autores: Paluch,Márlon; Casagrande,Mirna M.; Mielke,Olaf H. H.
The sphragis morphology of seven species of Actinote Hübner, [1819] from south Brazil are presented and discussed comparatively. Their significant differences and scales were revealed with SEM photographs. They can be usable as characters to identify species.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Actinote; Morphology; Scales; Sphragis; Taxonomy.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262003000400007

Age and growth parameters of the dourado Salminus brasiliensis (Cuvier, 1816) from the river Cuiabá, Mato Grosso State, Brazil
Provedor de dados: 3
Autores: Zuliani, Marina Soares; Ambrosio, Angela Maria; Francisco, Talitha Mayumi; Balbi, Thiago José; Okada, Edson Kiyoshi; Gomes, Luiz Carlos.
Age and growth parameters of Salminus brasiliensis (Curvier, 1816) from the Manso Reservoir and from the river Cuiabá are estimated by their fish scales. Sampling was performed between January and December 2006. There was a linear relationship between the standard length of the fish (cm) and the scale radius (mm) (r = 0.93). The coefficients of variation of standard mean lengths calculated for fish of the same age class were low (&gt;19.0%), while temporal variation analysis of mean marginal increment showed that growth ring was annually formed in November, possibly related to the species’s reproductive period between November and January. The maximum number of rings was 12 for both sexes. The growth curve for length expressed by von Bertalanffy model was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scales; Growth rings; Von Bertalanffy; Characidae ecologia e limnologia.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27868