João Encarnação

João Encarnação
Universidade do Algarve | UALG · Centro de Ciências do Mar (CCMAR)

Master of Science
PhD Student

About

23
Publications
10,850
Reads
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195
Citations
Citations since 2017
18 Research Items
173 Citations
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Introduction
João Encarnação currently works at the Centro de Ciências do Mar (CCMAR), University of Algarve, as a PhD student. His research focus on invasive marine species, range expansion of species due to climate change, citizen science as a tool for early detection of new species appearance. Founder and coordinator of the NEMA citizen science project: www.NEMAlgarve.com. Full CV: https://www.cienciavitae.pt//pt/E713-A69D-8FBD

Publications

Publications (23)
Article
Full-text available
As the number of introduced species keeps increasing unabatedly, identifying and prioritising current and potential Invasive Alien Species (IAS) has become essential to manage them. Horizon Scanning (HS), defined as an exploration of potential threats, is considered a fundamental component of IAS management. By combining scientific knowledge on tax...
Article
Full-text available
The invasive Atlantic blue crab Callinectes sapidus has considerably extended its distribution along the Gulf of Cadiz and Moroccan coasts in the northeast Atlantic. This could indicate a new introduction event in the Gulf of Cadiz from the native area, in case of detectable genetic differences from the Mediterranean Sea populations. To test this a...
Article
The establishment of many non-indigenous species is primarily controlled by propagule pressure, local environmental conditions, and biological interactions. An introduction is doomed to fail if any one of these factors is unsuitable. A few Atlantic blue crab Callinectes sapidus Rathbun, 1896 specimens have been collected along a limited stretch of...
Article
Full-text available
The occurrence of the exotic Atlantic blue crab Callinectes sapidus Rathbun, 1896 (Crustacea: Decapoda: Portunidae) is reported for the first time from the Moroccan Atlantic coast. Working with local fishermen, we gathered 160 records of the Atlantic blue crab from several estuarine, coastal and marine areas, in the period between June and August 2...
Article
Full-text available
About 3.1 billion people around the world live within 100 km of the coastline. If you are one of those people, then you also live near an estuary. What you probably do not know is that many alien species live in this underwater world, and we are not talking about extraterrestrial species from outer space. Are you scared? Well, do not be! These alie...
Article
Full-text available
Citizen science and informed citizens have become fundamental in providing the first records and accounts about the expansion of numerous non-indigenous species. However, implementing a successful citizen science campaign can be expensive and particularly difficult for aquatic species. Here, we demonstrate how a low-cost citizen science campaign an...
Article
Full-text available
The coastal waters of Angola support a rich and diverse fauna. However, the ichthyofauna of the region is poorly known; the only fish species studied in detail are those with commercial importance. The main objective of the present study is to report the presence of several fish species for the first time from the coast of Angola. The records were...
Book
Full-text available
Se presenta una lista actualizada de las especies exóticas que se encuentran en etapa de establecimiento o de propagación de la invasión en aguas continentales de la península ibérica. La lista está basada en la evaluación sistemática de los datos en colaboración con un amplio equipo de expertos de España y Portugal. Esta lista de actualización es...
Book
Full-text available
An updated list is presented of the alien species in the establishment or spread invasion stage in in-land waters at the Iberian Peninsula. The list is based on a systematic assessment of information in collaboration with a wide expert team from Spain and Portugal. This updated list is an important tool supporting the implementation of the IAS Regu...
Book
Full-text available
An updated list is presented of the alien species in the transport or introduction invasion stage in inland waters of the Iberian Peninsula. The list is based on a systematic assessment of information in collaboration with a wide expert team from Spain and Portugal. This list is an important tool to support the implementation of the IAS Regulation,...
Article
Full-text available
Biological invasions are among the most challenging ecological and conservation riddles of our times. Fortunately, citizen science projects became a valuable tool to detect non-indigenous species (NIS), document their spread, prevent dispersion, and eradicate localized populations. We evaluated the most undisputed definitions of citizen science and...
Article
Full-text available
The estuarine nudibranch Tenellia adspersa (Nordmann, 1845) was recorded for the first time in Portugal, while sampling for fouling fauna of artificial structures along the salinity gradient of the Guadiana estuary (SW Iberian Peninsula). Two specimens were found in association with the invasive hydrozoan Cordylophora caspia (Pallas, 1771) and kept...
Poster
Full-text available
A low-cost citizen science campaign increased the knowledge on two invasive marine species in south Portugal. In just six months, citizen scientists extended in more than 80 km the known distribution of the invasive Atlantic blue crab. New records of weakfish in the Guadiana estuary where reported in 2019 since the last ones in 2017.
Article
Full-text available
The present study reports six new and consecutive records of the Atlantic blue crab (Callinectes sapidus Rathbun, 1896) in the southern coast of Portugal. Specimens were caught during less than two months (22nd November 2018 – 18th January 2019) as bycatch of trammel nets operated by small-scale fishing boats in scattered locations along the Algarv...
Preprint
Full-text available
Climate change and the overall increase of seawater temperature are causing a poleward shift in species distribution, which includes a phenomenon described as the tropicalization of temperate regions. This work aims to report the first records of four species off the southwestern Iberian Peninsula, namely, the oceanic puffer Lagocephalus lagocephal...
Article
Full-text available
Climate change and the overall increase of seawater temperature are causing a poleward shift in species distribution, which includes a phenomenon described as the tropicalization of temperate regions. This work aims to report the first records of four species off the southwestern Iberian Peninsula, namely, the oceanic puffer Lagocephalus lagocephal...
Article
Full-text available
Increasing interest for recreational SCUBA diving worldwide is raising the concern about its potential effects on marine ecosystems. Available literature is still much focused either on impacts on coral reefs of tropical regions or on diver's behaviour underwater. In this study we analysed, through photo-quadrats, the benthic community composition...
Article
This study evaluated the impacts of submarine groundwater discharges (SGD) on a rocky intertidal community of South Portugal, during April-November 2011. Chlorophyll-a concentration was higher at the SGD site in respect to the Reference site. Epibenthic community structure differed between sites, with an increase in Chthamalus spp. and a decrease i...
Article
The influence of submarine groundwater discharges (SGD) on the dynamics of coastal ecosystems is receiving increasing scientific attention, although our knowledge of this issue still remains insufficient. Understanding the ecological response of coastal ecosystems to SGD dynamics is important in order to evaluate and predict changes in coastal comm...
Article
Full-text available
The objective of this study was to evaluate how inter-annual changes in freshwater inputs have affected the decapod assemblages in the Guadiana estuary. Three major areas in the estuary were sampled during the summer, in 2001 (high inflow year and before the filling of the Alqueva dam), in 2002 (low inflow and after filling of the Alqueva dam), and...

Questions

Question (1)
Question
Anyone has field experience on eficiency of using this type of casting traps (image attached) versus more "traditional" pots ? If applied to the blue crab, would be optimal.
The idea would be to use these casting traps to cover a wider geographical area (also more replicates) on a much shorter time period. And avoid the trouble of going once to deploy the pots and having to go back one or two days later to retrieve them.
Any thoughts or knowledge on any study carryed-out with such casting traps would be well appreciated.

Network

Cited By

Projects

Projects (3)
Project
The present project integrates the call topic of collaborative research emphasizing emerging issues under the Quality of Life (QoL) concept, including technical and scientific sustainable international cooperation in the field of marine biodiversity conservation and adaptation. The project aims at increasing knowledge of ‘peixinho’ (little fish, Sicydium bustamantei) in São Tomé e Principe (STP), directly used as fishery resources. This project intends to make the ‘peixinho’ case study, an example for other fisheries with threatened goby fry in many tropical islands; and take advantage of the resources spent, studying the biodiversity in nearshore and riverine areas. We will expand existing initiatives and ongoing collaborations to lead to scientific and technical capacity building in STP.
Project
NEMAlgarve is a citizen science initiative to increase the scientific knowledge on new marine species reaching the Algarve (south Portugal) coastal zone and estuaries. Three main groups of target species: 1) Invasive species (e.g. Callinectes sapidus; Cynoscion regalis) 2) Species with sub-tropical affinities (e.g. Sparisoma cretense, Thalassoma pavo, Hermodice carunculata) 3) Local species changing their distribution and/or abundance due to habitat and climate change (e.g. Catostylus tagi, Lagocephalus lagocephalus) Find out more at www.NEMAlgarve.com
Archived project
Study and characterization of submarine groundwater discharges (SGD) in the Algarve coast