Pedro Morais

Pedro Morais
Florida International University | FIU · Department of Earth and Environment

PhD in Ecology

About

79
Publications
27,054
Reads
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1,509
Citations
Additional affiliations
April 2017 - April 2019
University of California, Berkeley
Position
  • Assistant Specialist
September 2014 - December 2015
The Czech Academy of Sciences
Position
  • PostDoc Position
March 2013 - September 2014
CIMA - Centro de Investigação Marinha e Ambiental
Position
  • Estuarine ecolgoy
Education
December 2001 - January 2008
Universidade do Algarve
Field of study
  • Ecology - Population Ecology
October 1994 - October 2000
Universidade do Algarve
Field of study
  • Marine Biology and Fisheries

Publications

Publications (79)
Article
Full-text available
European flounder Platichthys flesuslife history patterns were investigated in 3 basins along a latitudinal gradient (Minho, N Portugal; Gironde, SW France; Seine, N France). We used coupled Sr:Ca and Ba:Ca otolith signatures and microstructure to retrospectively determine habitats occupied by flounder during their life, including early larval onto...
Book
Full-text available
https://www.crcpress.com/An-Introduction-to-Fish-Migration/Morais-Daverat/9781498718738
Article
Cryptic invasions are defined as the introduction and spread of non-native lineages within the species' native range (intra-specific cryptic invasion) or the invasion of non-native species that goes unnoticed due to misidentification as a native or another invasive species (inter-specific cryptic invasion). While population-specific attributes are...
Article
Full-text available
Animal migration is the seasonal movement from one region to another and can involve thousands of individuals journeying across continents and oceans. Scientists often use electronic and physical tags to track the movements of migratory fish. However, these tags only work on bigger fish and only give a limited picture of where the fish have been. H...
Chapter
Coastal fishing populations have witnessed through centuries the variability of fisheries with years of rich and extremely poor yields separated by just a few years. However, such sharp fluctuations have occurred even before large-scale commercial fisheries. Therefore, the dynamic interaction between fish and the biological, chemical, and physical...
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 consumption of edible aquatic invasive species has gained popularity as a means to minimize their impacts while easing pressure on native resources and ecosystems. Weakfish Cynoscion regalis (Bloch & Schneider, 1801) is one of the most recent invasive fish species in the Iberian Peninsula (Europe) which once sustained an important fishery in th...
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 study and conservation of cetaceans benefit from systematic studies and non-systematic records about sightings and strandings. However, iEcology (internet ecology) was critical for numerous ecological studies and should be in the toolkit of cetacean ecologists. We hypothesize that iEcology is irreplaceable to obtain diversity data about cetacea...
Article
Weakfish Cynoscion regalis (Bloch and Schneider, 1801) is one of the most recent invasive fish in the Iberian Peninsula (Europe). Weakfish has established in the Sado estuary (Portugal) since the early 2010s, and fishers and anglers have expressed concern about its impacts on native prize fish. However, almost a decade later, there is no informatio...
Article
Discontinuities and density gradients in the ocean may guide fish larva towards estuarine nursery grounds. However, recreating the ocean in a box is a challenge, particularly when scientists aim to test the preferences of fish larvae when water treatments have different temperatures and salinities, as highlighted by Gouraguine et al. (2021). These...
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
Anchovies, salmon, sardines, gobies, mullets, flounder, bass, barbels, eels, shad, and even sharks – what do they have in common? Well, at certain points in their lives you may find them in estuaries, the final sections of rivers before they meet the ocean. Some fish live in estuaries their entire lives. However, some fish species prefer living in...
Article
Full-text available
Individual animals across all taxa differ consistently in behaviour, i.e. they show personality traits. This inter-individual variability has significant ecological and evolutionary consequences, since it affects a range of population-level processes. Here, we focus on the selection and recruitment of nursery habitats in temperate fish larvae. The...
Article
The development of sensorial acuity and swimming capabilities of coastal fish larvae and their responses to coastal nursery cues are essential for recruitment success. Most studies of the response of fish larvae to environmental cues and their recruitment into nursery areas have focused on coral reef fish and only a few studies focused on fish spec...
Article
The European flounder (Platichthys flesus Linnaeus, 1758) exhibits plasticity for several life traits throughout its distribution range, including ontogenetic habitat shifts during early life, as well as the timing and duration of spawning. Estuaries are preferred as nursery habitat; however, the importance of specific salinity zones for larval dev...
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 Sense Acuity and Behavioral (SAAB) Hypothesis proposes that the swimming capabilities and sensorial acuity of temperate fish larvae allows them to find and swim towards coastal nursery areas, which are crucial for their recruitment. To gather further evidence to support this theory, it is necessary to understand how horizontal swimming capabili...
Technical Report
Full-text available
The European flounder is a demersal species present along the NE-Atlantic Ocean, from Norway to Portugal, both in coastal and estuarine ecosystems (Nielsen, 1986). It is also present in the adjacent seas - Baltic, North, White, Mediterranean, and Black seas (Nielsen, 1986; Figure 5.2.2-1, Table 5.2.2-2). The species was introduced in North America...
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
The Atlantic blue crab Callinectes sapidus Rathbun, 1896 is native in the western Atlantic, however it is a non-indigenous species across Europe since 1900, among other world regions. In this paper, we report the first occurrences of this species in the Ria Formosa lagoon and in the Guadiana estuary (SW-Iberian Peninsula, Europe) which occurred in...
Article
Full-text available
New information on weakfish introduction vectors, its invasive status, distribution, and use as a fishing resource arose after the publication of “The transatlantic introduction of weakfish Cynoscion regalis (Bloch & Schneider, 1801) (Sciaenidae, Pisces) into Europe” by Morais and Teodósio (2016). Currently, the first known report of weakfish in Eu...
Article
Full-text available
Temperate marine fish larvae use a series of environmental cues (e.g., olfactory, hearing, visual) to mediate the selection of nursery habitats. However, habitat selection may vary according to individuals' physiological condition. Therefore, this study aimed to determine the ability of gilthead seabream (Sparus aurata L., 1758) larvae to utilize n...
Article
Full-text available
Jellyfish modulate the energy fluxes between compartments of aquatic ecosystems and the period that energy remains within each compartment. However, the contribution of different sources of organic matter (OM) to the production of most estuarine jellyfish species is unknown. Therefore, this study aimed to identify and quantify the putative sources...
Article
Full-text available
Several non-native invertebrate and vertebrate species have been detected in the Guadiana Estuary (SW-Iberian Peninsula, Europe) during the 21st century. In June 2015, the non-native hydroid Cordylophora caspia (Pallas, 1771) was detected for the first time in this estuary, which motivated an assessment of its distribution during late Spring and Su...
Article
Identifying nursery habitats is of paramount importance to define proper management and conservation strategies for flatfish species. Flatfish nursery studies usually report upon habitat occupation, but few attempted to quantify the importance of those habitats to larvae development. The reliance of two sympatric flatfish species larvae, the Europe...
Article
Full-text available
Dams alter the natural dynamics of river inflow which disrupt the biological processes in downstream ecosystems, as observed in the Guadiana estuary (SW-Iberian Peninsula, Europe). Here, significant inter-annual fluctuations in the densities of jellyfish occur during summer, likely due to changes in river discharge during winter. So, this study aim...
Article
The flux of organic matter (OM) across ecosystem boundaries can influence estuarine food web dynamics and productivity. However, this process is seldom investigated taking into account all the adjacent ecosystems (e.g. ocean, river, land) and different hydrological settings (i.e. river discharge). Therefore, we aimed to quantify the contribution of...
Article
Full-text available
Recent studies have shown that the behaviour and development of coral reef fish larvae is hampered by projected future CO2 levels. However, it is uncertain to what extent this effect also occurs in temperate species. The effects that elevated pCO2 (~2000µatm) levels, which are expected to occur in coastal upwelling regions in the future, have on sh...
Article
Full-text available
Weakfish Cynoscion regalis (Bloch & Schneider, 1801) is a sciaenid fish native to the east coast of North America and has been recently collected in three areas of the Iberian Peninsula (Europe). We aimed to i) provide the first report of the presence of weakfish in Europe, ii) hypothesize the most likely introduction vector, iii) discuss the poten...
Chapter
Full-text available
https://www.crcpress.com/An-Introduction-to-Fish-Migration/Morais-Daverat/9781498718738
Chapter
Full-text available
https://www.crcpress.com/An-Introduction-to-Fish-Migration/Morais-Daverat/9781498718738
Chapter
Full-text available
https://www.crcpress.com/An-Introduction-to-Fish-Migration/Morais-Daverat/9781498718738
Article
Full-text available
The feeding ecology of Blackfordia virginica was evaluated concurrently with their ecophysiological condition in a temperate estuary. The diet of B. virginica is composed not only of metazooplankton, as commonly observed for other jellyfish species, but also of phytoplankton, ciliates and detritus. This feeding behavior might explain their good nut...
Article
Full-text available
The Asian clam, Corbicula fluminea, is among the most pervasive invasive species in freshwater ecosystems worldwide. Our objective was to study C. fluminea’s functional response in terms of feeding behavior and food selectivity, using the natural variation in organic matter (OM) sources that occur in estuarine environments. Using C and N stable iso...
Article
Full-text available
The morphological variability of freshwater bivalve species, observed between and within river basins, may hamper their correct identification, even by experienced researchers. Classic morphometric measurements, i.e. shell length, height and thickness, or their ratios, are generally insufficient to distinguish populations and/or species. These issu...
Article
Full-text available
Several studies have documented effects of hydrological conditions influencing fish and benthonic communities in estuaries and coastal areas, but only few evidences of freshwater discharge on zooplankton assemblages are found. The major finding of our study in an estuary under climate variability with regulated flow by dams is that increased annual...
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...
Chapter
Full-text available
Background The impoundment of rivers by dams is the biggest direct anthropogenic impact on the hydrological cycle. The utility of dams, as providers of water for human consumption, irrigation and electrical production, is undeniable. However, the price to pay, weighting benefits versus ecological impacts caused by dams, is enormous and often questi...
Article
The ecological traits of piscivorous marine birds have been acknowledged to reflect ecosystem changes. We used the great cormorant as our indicator species in the Minho estuary (NW-Iberian Peninsula, Europe) to assess the temporal variation of their diet and the factors that could influence that variation. Pellets were col-lected in a night roost,...
Article
Full-text available
Genetic variation (mtDNA) of the European conger eel, Conger conger, was compared across five locations in the north-eastern Atlantic (Madeira, Azores, South Portugal, North Portugal and Ireland) and one location in the western Mediterranean (Mallorca). Genetic diversity of conger eel was high, and differentiation among regions was not significant....
Article
Full-text available
Lowe et al. (Estuaries and Coasts, 34:630–639, 2011) hypothesized that juvenile southern flounder Paralich-thys lethostigma (Jordan and Gilbert 1884) would migrate from the Gulf of Mexico into the Mobile-Tensaw River Delta (AL, USA) and use low-salinity (oligohaline/fresh-water) habitats during, at least, a portion of their first year of life. Thus...
Article
The impoundment of rivers by large dams is the biggest direct anthropogenic impact on the hydrological cycle. However, dams can help solving eutrophication in estuaries by controlling flow pulses, which in turn might enhance the advection of fish larval stages from their spawning and nursery areas. Thus, this work aimed to merge data on the abundan...
Article
This study aims to determine the diversity of migration patterns of the European flounder (Platichthys flesus (Linnaeus, 1758)) present in the Minho estuary and in the adjacent coastal area (NW-Iberian Peninsula). Assessing the diversity of flounder migration patterns at the southern limit of its distribution allows the determination of characteris...
Article
Full-text available
KeywordsBiodiversity–Biological invasions–Ecosystem functioning–Ecosystem services–World Conference on Biological Invasions and Ecosystem Functioning–BIOLIEF
Article
Global climate variabilty affects large-scale phenomena, such as the North Atlantic Oscillation (NAO), which is known to influence the climate in Europe. Considering the tendency from the last 30 years and the scenarios proposed by the IPCC, the dominance of NAO+ situations, characterized by long drought periods, is foreseen for southern Europe and...
Article
This study aims to study the diversity of the migration patterns of the anchovy Engraulis encrasicolus (L., 1758) collected in the Guadiana estuary (SE-Portugal/SW-Spain) and in the adjacent coastal area, by analysing Sr concentration distribution in sagittal otoliths. The distribution of Sr in otoliths of anchovy captured in the estuary allowed us...
Article
Full-text available
The UNESCO General Conference approved, in October 2009, the establishment of the International Centre for Coastal Ecohydrology (ICCE), under the auspices of the UNESCO, in Portugal. Human pressure on coastal areas has dramatically increased during the last decades and it is expected to continue to increase in the future. Adding to this scenario, c...
Article
The implementation of the UNESCO demosite at the Guadiana estuary represents an excellent opportunity to demonstrate how to adapt, mitigate and restore functioning of estuaries and coastal areas impacted by dams and climatic changes, using the Ecohydrology approach. Worldwide estuaries are suffering similar anthropogenic impacts that affect ecosyst...