Alexandre Marcel Silva MachadoFederal University of Santa Catarina | UFSC · Departamento de Ecologia e Zoologia
Alexandre Marcel Silva Machado
Master of Science
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Citations since 2017
11 Research Items
I am a PhD student in Ecology at Universidade Federal de Santa Catarina, Florianópolis, Brazil. I am most interested in behavioral ecology and the role of individual variation in behavior and it’s implications to the population level. I am also interested in how human populations interact with marine wildlife, and how both humans and animals can benefit from conservation. I had the opportunity to address such interesting topics using as a model the population of bottlenose dolphins that forages in cooperation with fishermen in Laguna, southern Brazil.
Human–wildlife cooperation occurs when humans and free-living wild animals actively coordinate their behavior to achieve a mutually beneficial outcome. These interactions provide important benefits to both the human and wildlife communities involved, have wider impacts on the local ecosystem, and represent a unique intersection of human and animal...
Abstract Human‐wildlife cooperation is a type of mutualism in which a human and a wild, free‐living animal actively coordinate their behaviour to achieve a common beneficial outcome. While other cooperative human‐animal interactions involving captive coercion or artificial selection (including domestication) have received extensive attention, we la...
1. Human-wildlife cooperation is a type of mutualism in which a human and a wild, free-living animal actively coordinate their behaviour to achieve a common beneficial outcome. 2. While other cooperative human-animal interactions involving captive coer-cion or artificial selection (including domestication) have received extensive
Understanding the dynamics of small-scale fisheries requires considering the diversity of behaviours and skills of fishers. Fishers may have different abilities and tactics that can translate into different fishing outcomes. Here, we investigate variation in fishing behaviours among traditional net-casting fishers that are assisted by wild dolphins...
Identifying individual animals is critical to describe demographic and behavioural patterns, and to investigate the ecological and evolutionary underpinnings of these patterns. The traditional non-invasive method of individual identification in mammals—comparison of photographed natural marks—has been improved by coupling other sampling methods, su...
Acoustic monitoring in cetacean studies is an effective but expensive approach. This is partly because of the high sampling rate required by acoustic devices when recording high-frequency echolocation clicks. However, the proportion of echolocation clicks recorded at different frequencies is unknown for many species, including bottlenose dolphins....
Assessing fish stocks harvested by small-scale fisheries is challenging. The lack of official fisheries data constrains the proper management of such fisheries. Thus, alternative sources of information are crucial to enrich data-poor fisheries. Here, we evaluated different sources of data for the mullet (Mugil liza) fishery, one of the most importa...
Individuals often associate socially with those who behave the sameway. This principle, homophily, could structure populations into distinct social groups. We tested this hypothesis in a bottlenose dolphin population that appeared to be clustered around a specialized foraging tactic involving cooperation with net-casting fishermen, but in which oth...
Incorporating the perception and attitudes of key stakeholders into conservation management can contribute to biodiversity conservation and has the potential to resolve human-wildlife conflicts. To this end, there is scope to enhance conservation outcomes by improving the capture and analysis of stakeholders perceptions and trans- lating these into...
Este livro é uma publicação do Programa de Pós-Graduação em Ecologia, do Centro de Ciências Biológicas, da Universidade Federal de Santa Catarina (PPGECO-UFSC). O curso de Ecologia de Campo foi realizado de 8 a 14 de novembro de 2016 na Fa- zenda Reunidas Campos Novos, em Bom Retiro, SC, e de 15 a 21 no Parque Municipal da Lagoa do Peri, em Flor...
A small and resident population of bottlenose dolphins, Tursiops truncatus gephyreus, inhabits a lagoon system in Laguna, southern Brazil. Some individuals of this population interact with artisanal fishers in a unique foraging tactic, the so-called cooperative fishing (Simões-Lopes et al., 1998). Their habitat use is linked with this foraging tactic. Dolphins that interact with fishers have their diurnal home ranges concentrated around sites where cooperative fishing occurs (Cantor et al., 2018). We propose passive acoustic monitoring to investigate if and how individuals change their home ranges at night, when fishers are absent and when there is a risk of bycatch in gillnet fishery.
The goals of this project are to (1) present an overview of the applications, challenges and opportunities for drone-research in ecology and conservation and (2) provide case studies on the use of drones to collect ecological data.
A atividade de campo é uma prática fundamental ao ecólogo. Neste curso de Ecologia de Campo, oito mestrandos e cinco doutorandos realizaram trabalhos de curta duração, utilizando modelos biológicos e sistemas distintos dos quais dedicação sua formação acadêmica. O curso foi organizado a fim de proporcionar aos alunos uma imersão teórica e prática em Ecologia. Os trabalhos foram elaborados e orientados por professores do departamento de Ecologia e Zoologia da UFSC, pós-doutorandos do PPGECO-UFSC. Também participaram da elaboração e orientação dos trabalhos a profa. Dra. Tatiana Silva Leite (Depto. de Oceanografia e Limnologia - UFRN), e os professores Dr. Elisandro Ricardo Drechsler dos Santos e Dr. Pedro Fiaschi (Depto. de Botânica - UFSC).