Nikola Tvrtković

ORCID: 0000-0002-1775-0292
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About
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Research Areas
  • Turtle Biology and Conservation
  • Lepidoptera: Biology and Taxonomy
  • Bat Biology and Ecology Studies
  • Environmental and Biological Research in Conflict Zones
  • Species Distribution and Climate Change
  • Botany and Plant Ecology Studies
  • Ichthyology and Marine Biology
  • Orthoptera Research and Taxonomy
  • Wildlife Ecology and Conservation
  • Spider Taxonomy and Behavior Studies
  • Ecology and biodiversity studies
  • Identification and Quantification in Food
  • Ecology and Vegetation Dynamics Studies
  • Entomological Studies and Ecology
  • Yersinia bacterium, plague, ectoparasites research
  • Marine and environmental studies
  • Ancient and Medieval Archaeology Studies
  • Mediterranean and Iberian flora and fauna
  • Amphibian and Reptile Biology
  • Marine Ecology and Invasive Species
  • Genetic diversity and population structure
  • Marine animal studies overview
  • Animal Ecology and Behavior Studies
  • Plant Ecology and Taxonomy Studies
  • Fish Biology and Ecology Studies

Croatian Science Foundation
2021-2024

Croatian Biospeleological Society
2021-2024

Greek Rescue Team
2023

Galapagos (Croatia)
2014-2022

State Institute for Nature Protection
2015-2021

Natura (Czechia)
2016

Croatian Natural History Museum
2002-2015

American Museum of Natural History
1999-2015

Observatoire Océanologique de Banyuls-sur-Mer
2008

Croatian Institute of History
2008

Abstract In a phylogeographical survey of the Italian wall lizard, Podarcis sicula , DNA sequence variation along an 887‐bp segment cytochrome b gene was examined in 96 specimens from 86 localities covering distribution range species. addition, parts 12S rRNA and 16S genes 12 selected as representatives more divergent haploclades were sequenced (together about 950 bp). Six main groups found, three representing samples nominate subspecies closely related other comprising campestris well all...

10.1111/j.1365-294x.2005.02427.x article EN Molecular Ecology 2005-01-10

Abstract Aim We analysed the population genetics of brown hare ( Lepus europaeus ) in order to test hypothesis that this species migrated into central Europe from a number late glacial refugia, including some Asia Minor. Location Thirty‐three localities Greece, Bulgaria, Italy, Croatia, Serbia, Poland, Switzerland, Austria, France, Germany, Netherlands, Spain, United Kingdom, Turkey and Israel. Methods In total, 926 hares were for mitochondrial DNA (mtDNA) variation by restriction fragment...

10.1111/j.1365-2699.2008.02013.x article EN Journal of Biogeography 2008-11-25

Abstract Molluscs are a diverse and ubiquitous group of organisms which contribute to the formation biogenic sediments one major prey taxa for neritic‐stage loggerhead sea turtles ( Caretta caretta ) worldwide. Here we investigated what degree molluscs diet individual turtles, role feeding strategy loggerheads might play in bioturbation, key processes nutrient transport marine ecosystems. We performed detailed analysis benthic from digestive tracts 62 (curved carapace length: 25.0–85.4 cm)...

10.1111/j.1439-0485.2010.00402.x article EN Marine Ecology 2010-09-15

Data on tag recoveries of 31 adult female and two juvenile loggerhead turtles ( Caretta caretta ) along the eastern Adriatic coast were analysed. All females originated from Mediterranean nesting areas: 29 Greece, one Cyprus Turkey. This is largest aggregation long-distance in for population Greece. The short period elapsed between last observation some beach their recovery suggests existence a migratory pathway Ionian Sea into Adriatic. Recoveries within year indicate that loggerheads...

10.1017/s0025315404009488h article EN Journal of the Marine Biological Association of the United Kingdom 2004-03-22

The first annotated checklist of crickets and grasshoppers (Orthoptera) Croatia is presented. With 184 orthopteran species, 103 Ensifera 81 Caelifera, known to inhabit the country, among richest European countries in terms Orthoptera diversity. Altogether 25 species erroneously reported from country are omitted checklist, 16 (Isophya speciosa, Poecilimon brunneri, P. jonicus, thoracicus, Modestana ebneri, Pachytrachis bosniacus, Rhacocleis neglecta, Tessellana carinata, T. nigrosignata,...

10.11646/zootaxa.4533.1.1 article EN Zootaxa 2018-12-21

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 324:281-285 (2006) - doi:10.3354/meps324281 Sex ratios of juvenile loggerhead sea turtles Caretta caretta in Mediterranean Sea Paolo Casale1,*, Bojan Lazar2,3, Sara Pont4, Jesús Tomás5, Nicola Zizzo6, Ferran Alegre4, Javier Badillo5, Aldo Di Summa6, Daniela Freggi7, Gordana Lackovic8, Juan Antonio Raga5,...

10.3354/meps324281 article EN Marine Ecology Progress Series 2006-10-23

Geographic isolation, altitude, climate, landscape and habitat are significant predictors of butterfly diversity in mountain ecosystems.Their its dependence on aspect (compass bearing) biogeographic characteristics the butterflies were surveyed karst Biokovo southern Croatia.The results affirm that there is a high study area species composition elements more dependent altitude than mountain.The present indicates relief preferences strongly influence features relationship between richness per...

10.14411/eje.2011.081 article EN European Journal of Entomology 2011-10-03

We explored patterns of size variation for mainland and island populations Erinaceus roumanicus. Size was expressed either as the condylobasal length skull or first eigenvector obtained from a principal components analysis correlation matrix with four cranial variables. Both estimators were highly correlated. The pattern across Europe smooth cline, largest hedgehogs in south. Furthermore, correlated positively temperature negatively summer precipitation. Regression model hedgehog against...

10.1515/mamm.2009.055 article EN Mammalia 2009-01-01

The small Indian mongoose (Herpestes auropunctatus) is one of the world’s 100 worst invasive species (IUCN 2000). It has negative impacts on several mammals islands where it was introduced. We assess abundance mammal populations and activity time introduced ship rats (Rattus rattus) three mongoose-infested mongoose-free in Adriatic Sea, Croatia. set up transects each island with a trapping system consisting 30 live traps to capture under grams larger mongooses, transect. Our results...

10.3897/neobiota.11.1819 article EN cc-by NeoBiota 2011-11-30

The authors researched changes in specific habitat types areas considered to be the most important Croatia for protection of endangered bird fauna during period 1990–2000. analysis focused on four continental part (Danube and Drava River alluvium, Pokupsko depression, Sava basin, Upper basin) Mediterranean (Neretva estuary, NW North Dalmatia, Paško field, Lake Vrana). For classified types, Corine land cover databases 1990 2000 were analysed. greatest detected along Danube where more than 8%...

10.1080/13504509.2011.561050 article EN International Journal of Sustainable Development & World Ecology 2011-05-19

Abstract Aim Character displacement and release can occur quickly in novel environments communities. Species introductions are ‘natural experiments’ which evolutionary changes be studied as community composition varies. We asked whether morphologies of the introduced small Indian mongoose ( Herpestes auropunctatus ) larger native stone marten Martes foina on Adriatic islands where they sympatric or allopatric consistent with hypotheses character release, respectively. Location The is to Asia...

10.1111/jbi.12587 article EN Journal of Biogeography 2015-08-11

Exhibiting manifold ecological impacts on terrestrial biota, roads have become a major driver of environmental change nowadays. However, many insect groups with high indication potential, such as grasshoppers and crickets (Orthoptera), been largely neglected in road ecology research from functional perspective. Using two complementary sampling methods, we investigated the spatial dynamics diversity six traits orthopteran assemblages, respect to motorway proximity associated factors,...

10.3390/insects13070572 article EN cc-by Insects 2022-06-24
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