Reef microhabitats mediate fish feeding intensity and agonistic interactions at Príncipe Island Biosphere Reserve, Tropical Eastern Atlantic

2020 ◽  
Vol 41 (5) ◽  
Author(s):  
Angela Marina Canterle ◽  
Lucas Teixeira Nunes ◽  
Luisa Fontoura ◽  
Hugulay Albuquerque Maia ◽  
Sergio Ricardo Floeter
Keyword(s):  
Biosphere Reserve ◽  
Agonistic Interactions ◽  
Feeding Intensity ◽  
Fish Feeding

scholarly journals Incorporating Intelligence in Fish Feeding System for Dispensing Feed Based on Fish Feeding Intensity

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 91948-91960
Author(s):  
Mutiu A. Adegboye ◽  
Abiodun M. Aibinu ◽  
Jonathan G. Kolo ◽  
Ibrahim Aliyu ◽  
Taliha A. Folorunso ◽  
...  
Keyword(s):  
Feeding System ◽  
Feeding Intensity ◽  
Fish Feeding

scholarly journals Agonistic Interactions of Nesting and Nonbreeding Macaws

The Condor ◽  
2004 ◽  
Vol 106 (2) ◽  
pp. 354-362 ◽  
Author(s):  
Katherine Renton
Keyword(s):  
Agonistic Behavior ◽  
Interference Competition ◽  
Biosphere Reserve ◽  
Loss Of Control ◽  
Agonistic Interactions ◽  
Nest Area ◽  
Nest Cavity ◽  
Low Intensity ◽  
Nest Sites ◽  
Nestling Period

Abstract Agonistic interactions of nesting and nonbreeding Blue-and-yellow Macaws (Ara ararauna) were observed in the Manu Biosphere Reserve, Peru, during the nestling phase of the nest cycle in 1988 and 1989. Three nesting pairs of macaws were identified by facial line and tail patterns, and agonistic behavior was categorized as high-intensity or low-intensity interactions. Nesting pairs associated strongly with cavities and perch trees within the nest area, and frequently chased nonbreeding conspecifics from an area of up to 100 m from the nest. In one case, loss of control of the nest cavity and perch trees by a lone nesting macaw to a nonbreeding pair led to infanticide and abandonment of the nest. Agonistic interactions were predominantly intraspecific, and 79% of agonistic interactions by nesting macaws were directed at nonbreeding conspecifics. The frequency of agonistic interactions increased significantly with day of the nesting cycle, being greatest toward the end of the nestling period. Nonbreeding macaws spent significantly more time in trees at the edge of the nest area than in trees within the nest area, and significantly less time within the nest area when nesting pairs were present than when absent. In both years, only 36% of the available cavities within the nest area were utilized by Blue-and-yellow Macaws, though some cavities were utilized by smaller macaw species. Intraspecific interference competition of nesting macaws may exclude potential breeders from investigating cavities, effectively limiting availability where nest sites are clumped in distribution. Interacciones Agonísticas entre Guacamayas Reproductivas y No Reproductivas Resumen. Se llevaron a cabo observaciones de las interacciones agonísticas entre parejas reproductivas y no reproductivas de la guacamaya Ara ararauna en la Reserva de la Biosfera de Manu en Perú, durante la fase de crianza de los pollos en 1988 y 1989. Se identificaron tres parejas de guacamayas por medio del patrón de líneas en su rostro y por la forma de desgaste de la cola, y el comportamiento agonístico fue caracterizado como interacciones de alta y de baja intensidad. Las parejas nidificantes presentaron una fuerte asociación con las cavidades y los árboles de percha dentro del área de anidación, y frecuentemente persiguieron a individuos coespecíficos no reproductivos hasta 100 m fuera del nido. En un caso, una guacamaya reproductiva solitaria perdió posesión de su nido y del árbol de percha frente a una pareja no reproductiva, resultando en el infanticidio de una cría por la pareja no reproductiva, y en el abandono del nido. Las interacciones agonísticas fueron predominantemente de tipo intraespecífico, con el 79% de las interacciones agonísticas por parte de las parejas nidificantes dirigidas a coespecíficos no reproductivos. La frecuencia de las interacciones agonísticas incrementó significativamente con el día del ciclo de anidación, siendo mayor hacia finales del periodo de crianza de los pollos. Las guacamayas no reproductivas pasaron significativamente más tiempo en los árboles alrededor del área de anidación comparando que en los árboles dentro del área de anidación, y permanecieron significativamente menos tiempo dentro del área de anidación cuando las parejas reproductivas estaban presentes que cuando estaban ausentes. En 1998 y 1999, sólo el 36% de las cavidades disponibles fueron utilizadas por A. ararauna, aunque algunas fueron utilizadas por otras especies de guacamayas más pequeñas. La interferencia por competencia intraespecí fica de las guacamayas reproductivas podría excluir a reproductores potenciales de las cavidades, limitando así la disponibilidad de cavidades en áreas en donde los sitios de anidación se encuentran agrupados.

scholarly journals A Visual Aquaculture System Using a Cloud-Based Autonomous Drones

Drones ◽  
2021 ◽  
Vol 5 (4) ◽  
pp. 109
Author(s):  
Naomi A. Ubina ◽  
Shyi-Chyi Cheng ◽  
Hung-Yuan Chen ◽  
Chin-Chun Chang ◽  
Hsun-Yu Lan
Keyword(s):  
Deep Learning ◽  
Low Cost ◽  
Cost Effective ◽  
Cloud Services ◽  
Fish Length ◽  
Surveillance Systems ◽  
Feeding Intensity ◽  
Fish Feeding ◽  
Intelligent Decision Making ◽  
Intelligent Decision

This paper presents a low-cost and cloud-based autonomous drone system to survey and monitor aquaculture sites. We incorporated artificial intelligence (AI) services using computer vision and combined various deep learning recognition models to achieve scalability and added functionality, in order to perform aquaculture surveillance tasks. The recognition model is embedded in the aquaculture cloud, to analyze images and videos captured by the autonomous drone. The recognition models detect people, cages, and ship vessels at the aquaculture site. The inclusion of AI functions for face recognition, fish counting, fish length estimation and fish feeding intensity provides intelligent decision making. For the fish feeding intensity assessment, the large amount of data in the aquaculture cloud can be an input for analysis using the AI feeding system to optimize farmer production and income. The autonomous drone and aquaculture cloud services are cost-effective and an alternative to expensive surveillance systems and multiple fixed-camera installations. The aquaculture cloud enables the drone to execute its surveillance task more efficiently with an increased navigation time. The mobile drone navigation app is capable of sending surveillance alerts and reports to users. Our multifeatured surveillance system, with the integration of deep-learning models, yielded high-accuracy results.

Evaluation of fish feeding intensity in aquaculture using a convolutional neural network and machine vision

Aquaculture ◽  
2019 ◽  
Vol 507 ◽  
pp. 457-465 ◽  
Author(s):  
Chao Zhou ◽  
Daming Xu ◽  
Lan Chen ◽  
Song Zhang ◽  
Chuanheng Sun ◽  
...  
Keyword(s):  
Neural Network ◽  
Machine Vision ◽  
Convolutional Neural Network ◽  
Feeding Intensity ◽  
Fish Feeding

Thysanoptera diversity associated with Mexican lemon (Citrus aurantifolia Christm.)

2020 ◽  
Vol 13 (9) ◽  
Author(s):  
Francisco Javier Avendaño-Gutiérrez ◽  
Salvador Aguirre Paleo ◽  
Alejandro Morales Hernández ◽  
Venecia Quesadas-Béjar
Keyword(s):  
Biosphere Reserve ◽  
Simple Random Sampling ◽  
Diversity Indices ◽  
Diaphorina Citri ◽  
Program Calculation ◽  
Homogeneous Relation ◽  
Candidatus Liberibacter ◽  
Scirtothrips Citri ◽  
Species Richness And Abundance ◽  
First Time

Objective: To calculate the monthly relative abundance of Thysanoptera species, according to the Margalef, Simpson and Shannon-Wiener diversity indices. Design / Methodology / Approach: The work was carried out in three geographic units with conventional management, during January-December, 2019 in the Reserva de la Biosfera Zicuirán-Infiernillo (Biosphere Reserve), Michoacán, Mexico. In each unit, 10 trees were selected through simple random sampling. Thrips counts were performed on ten shoots per tree every 15 d, for a total of 7200 shoots in the three geographic units. Thysanoptera individuals were placed in entomological jars. The variables were: number of thrips collected per shoot in sampled tree and geographic unit (orchard). To estimate the specific richness and structure of species, the program "calculation of diversity indices DIVERS" was used. Results: In the three geographical units studied, the recorded presence of Thysanoptera accounted for 12 to 17 species. For Nueva Italia 12 recorded species, two were permanent (16.66%), five abundant (41.66%), one scarce (8.3%) and four rare (33.33%). In Zicuirán, three species were permanent (17.64%), six abundant (35.29%), two scarce (11.76%) and six rare (35.29%). In Los Hoyos, four species were permanent (26.66%), four abundant (26.66%) and seven rare (46.66%). The abundance of species was represented by the genus Frankliniella and the species Scolothrips sexmaculatus and Scirtothrips citri. The highest species richness and abundance was found from January to May. In October and November, the value of the calculated indices was zero, which shows less richness and abundance of individuals. The best species uniformity was recorded during January and December, which meant a more stable and homogeneous relation. Study limitations/Implications. Pest resurgence, presence of Candidatus Liberibacter spp. and its vector Diaphorina citri. Findings / Conclusions: in Nueva Italia, 12 species were taxonomically determined; in Los Hoyos 15, and in Zicuirán 17 species, which are reported for the first time in the state of Michoacán, Mexico. At the geographic unit "Los Hoyos" diversity was higher, uniform and stable.

REINTEGRATION OF THE CHORNOBYL NPP EXCLUSION ZONE ON THE BASIS OF THE DESIGN-PLANNING COMPLEX

2020 ◽  
pp. 11-18
Author(s):  
I.I. Ustinova ◽  
◽  
M.M. Dyomin ◽  
G.V. Aylikova ◽  
◽  
...  
Keyword(s):  
Urban Planning ◽  
City Planning ◽  
Biosphere Reserve ◽  
Brand Name ◽  
Exclusion Zone ◽  
Rational Development ◽  
Production Complex ◽  
Design Planning ◽  
Renewable Energy Generation ◽  
First Time

The aim of the publication is to determine the prerequisites of and to elaborate on the foundations of the Exclusion Zone reintegration in order to address the issue of rational development of urban-planning documentation complex regarding the legitimacy of said territory exploitation. It is established that for the implementation of the «Radioactive waste management strategy» the production complex «Vector» is being constructed on the Exclusion Zone territory; a powerful park of renewable energy generation is being created to implement the «Chornobyl - a Territory of Change» strategy; a Chornobyl Radiation-Ecological Biosphere Reserve was established to support and increase the barrier function of the zone; in order to promote the Safe Chornobyl brand-name, the tourist traffic is being increased and the conditions for the visitors are improving. In the absence of developed and approved city planning documentation, the listed above causes the problem of legitimacy and rationality of the exclusion zone territory use. The paper for the first time raises the question of the need to elaborate the concept of functional planning of the Chornobyl NPP exclusion zone territory and the development of the design-planning complex (urban planning documentation): from the territory.

Alien species in the fauna of the Black Sea (Chornomorskyi) Biosphere Reserve

Geo&Bio ◽  
2019 ◽  
Vol 2019 (17) ◽  
pp. 48-61
Author(s):  
Dariya Korolesova ◽  
◽  
Yurii Moskalenko ◽  
Maria Nitochko ◽  
Zoya Selyunina ◽  
...  
Keyword(s):  
Alien Species ◽  
Black Sea ◽  
Biosphere Reserve ◽  
The Black Sea

An importance of soil humidification in forming of avifauna of arboreal plantation in the Biosphere reserve «Askania Nova» (un-reproductive period)

2016 ◽  
Vol 27 (3-4) ◽  
pp. 55-69
Author(s):  
M. A. Listopadsky
Keyword(s):  
Soil Moisture ◽  
Influence Factors ◽  
Data Communication ◽  
Biosphere Reserve ◽  
Reproductive Period ◽  
Defined Contribution ◽  
Separate Species ◽  
Steppe Birds ◽  
Reserve Forest ◽  
Autumn And Winter

With gradient analysis investigated the role of soil moisture in the formation of the modern population of birds in the reserve forest plantations. Soil moisture was divided into seven grades. For this purpose used grass cover and the coefficient of local moistening. His proposed PhD L. P. Travleev. This method allows knowing the degree of influence of soil moisture at the birds. We analyzed birds species composition, population, placement in space and power of influence factors (soil moisture). Investigations were carried out on the territory of the Biosphere Reserve «Askania Nova». We studied the birds which live in the reserve at the end of the summer, autumn and winter. This happened from 2006 to 2013 years. Specially was studied as permanently specific form of birds is found in a particular humidity. The degree of coupling was studied using the amount of information that transmits to the local bird humidification. For 68 species of birds are the options of the population density, coefficient koligatsii and data communication with the seven variants of soil moisture. For all kinds of set information «price» of each option dampening that contributes to the formation of a particular community of birds. Thus, the defined contribution to the formation of soil moisture forest bird communities. Species representation and density gradient within the test moisture is not in direct linear relationship from moisture and ranges from 11 (very coldly) to 50 species (moist soil). The density of the community varies from 0,5 birds / hectare (very dry) to 269 birds / hectare (fresh soil). The strongest link between the information and the formation of moisture gradient structure avifauna is typical in a fresh soil – bird on the edge, and wet – forest representatives. These types of humidification function is performed starting in the formation of two major blocks dendrophilous community. The steppe birds give way to forest representatives when the soil slightly moist. The main conclusion of our study includes the following: than wetter the soil the more species of birds lives in the forest; some graduation humidity are the most important for separate species of birds; it is very important for birds, there are places where one can drink water. Further invasive alien species can occur where the soil is moist. Forest with dry soil is already fully occupied by birds.

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