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Diversity publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Freshwater Biodiversity Hotspots in 2025

edited by

Simon Blanchet

submission deadline 31 Dec 2025 | 1 articles | Viewed by 1027 | Submission Open

Keywords: freshwater biodiversity; biodiversity hotspots; conservation strategies; climate change impacts; ecosystem resilience; species richness; genetic diversity; phylogenetic diversity; functional diversity

(This special issue belongs to the Section Freshwater Biodiversity)

Ecology, Distribution, and Conservation of Endangered Birds

edited by Xiaoping Yu

submission deadline 31 Dec 2025 | 1 articles | Viewed by 953 | Submission Open

Keywords: breeding ecology; reintroduction; climate changes; biodiversity; habitat selection; conservation; species distribution

Bird Parasites—3rd Edition

edited by

Gary Voelker

submission deadline 31 Dec 2025 | 1 articles | Viewed by 911 | Submission Open

Keywords: avian parasites; taxonomic diversity and host associations; host– parasite interactions; ecological assessment and modeling; biogeographical distribution; climate change effects

(This special issue belongs to the Section Animal Diversity)

Phytoplankton Communities and Their Microbial Associates Under Climate Change and Anthropogenic Pressures

edited by

Zhangxi Hu

and

Yunyan Deng

submission deadline 31 Dec 2025 | 1 articles | Viewed by 907 | Submission Open

Keywords: marine phytoplankton; harmful algal blooms (HABs); microbiome interactions; ecosystem resilience; metabarcoding; anthropogenic pressures; climate change

(This special issue belongs to the Section Marine Diversity)

Biodiversity Conservation Planning and Assessment—2nd Edition

edited by Yu Peng

submission deadline 31 Dec 2025 | 1 articles | Viewed by 899 | Submission Open

Keywords: plant richness; plant diversity; biodiversity planning; biodiversity assessment; biodiversity conservation; plant diversity and biodiversity

Cephalopod Resilience in Changing Marine Ecosystems

edited by

Xiaodong Zheng

and Ran Xu

submission deadline 31 Dec 2025 | 1 articles | Viewed by 876 | Submission Open

Keywords: cephalopod diversity; marine ecosystems; climate change impacts; trophic interactions; species distribution shifts; evolutionary adaptations

(This special issue belongs to the Section Marine Diversity)

Marine Biodiversity: Patterns and Processes

edited by

Bert W. Hoeksema

and

Kaveh Samimi-Namin

submission deadline 31 Dec 2025 | Viewed by 736 | Submission Open

Keywords: marine biogeography; marine distribution ranges; global marine biodiversity; onshore– offshore distributions; biodiversity centers; latitudinal diversity gradients; marine currents; substrate availability; climate change; marine speciation; marine extinction; paleogeography

(This special issue belongs to the Section Marine Diversity)

Ecological Dynamics and Conservation of Marine Fisheries

edited by Ernesto A. Chavez-Ortiz

submission deadline 31 Dec 2025 | 1 articles | Viewed by 507 | Submission Open

Keywords: stock assessment; fisheries simulation; biodiversity; harvesting strategies; potential biomass; potential production

(This special issue belongs to the Section Marine Diversity)

Population Genetics of Animals and Plants—2nd Edition

edited by

Petras Prakas

submission deadline 31 Dec 2025 | Viewed by 381 | Submission Open

Keywords: genetic variability; genetic structure; conservation; fragmentation; hybridization; phylogeography; migration; population demography; invasive species; exploited populations

Avian Genetic Diversity

edited by

Giovanni Forcina

and

Tamer Albayrak

submission deadline 31 Dec 2025 | Viewed by 274 | Submission Open

Keywords: adaptive radiation; bird; divergence; extinction; hybridisation; introgression; museomics; phylogeography; phylogeny; speciation; wildlife forensics

(This special issue belongs to the Section Animal Diversity)

Biodiversity in the Context of Island Biogeography

edited by Konstantinos Proios and

Maria Lazarina

submission deadline 31 Dec 2025 | Viewed by 254 | Submission Open

Keywords: island biogeography; biodiversity; species richness; community assembly; dispersal; in situ speciation; species– area relationship; human impact; habitat island; conservation

(This special issue belongs to the Section Biodiversity Conservation)

Ecology and Conservation of Freshwater Bivalves

edited by

Xiubao Chen

, Haibo Wen and

Xiaochen Huang

submission deadline 31 Dec 2025 | Viewed by 188 | Submission Open

Keywords: freshwater bivalves; biodiversity; ecology; evolution; taxonomy; threats; ecotoxicology; conservation

(This special issue belongs to the Section Freshwater Biodiversity)

Chemical Diversity of Plant Bioactives: Ecological Functions, Organismal Interactions, and Environmental Adaptations

edited by

Jesus Fernando Ayala-Zavala

submission deadline 31 Dec 2025 | Viewed by 184 | Submission Open

Keywords: plant bioactive compounds; chemical diversity; ecological interactions; evolutionary adaptations; data-driven bioactivity prediction

Marine Species and Microbial Biodiversity in a Changing Ocean: Adaptation, Symbiosis and Ecosystem Function

edited by Federica Montesanto

submission deadline 31 Dec 2025 | Viewed by 180 | Submission Open

Keywords: marine biodiversity; microbial diversity; symbiosis; adaptation; climate change; host– microbiome interactions; benthic communities; barcoding; metabarcoding; marine ecosystem resilience; species– microbiome dynamics; ocean acidification; environmental stressors

Ecological Aquaculture: Mechanisms, Modeling, and Sustainability in a Changing Environment

edited by

Bin Wen

Jiamin Sun

and

Yunfei Sun

submission deadline 31 Dec 2025 | Viewed by 152 | Submission Open

Keywords: ecological aquaculture; fish adaptation; nutrient cycling; aquaculture systems; sustainability

(This special issue belongs to the Section Marine Diversity)

Climate Change Impacts and Resilience in Pacific Island Marine Ecosystems

edited by

Stuart Kininmonth

submission deadline 31 Dec 2025 | Viewed by 136 | Submission Open

Keywords: network modeling; marine ecosystems; Bayesian networks; socioecological systems; coral reefs

(This special issue belongs to the Section Marine Diversity)

Perspectives on Small Game Research for Biodiversity Conservation and Sustainable Resource Management

edited by

Emilio Jorge Tizado Morales

submission deadline 31 Dec 2025 | Viewed by 128 | Submission Open

Keywords: small game management; biodiversity conservation; sustainable resource management; population dynamics; conservation policies

(This special issue belongs to the Section Biodiversity Conservation)

Morphometric and Genetic Approaches to the Study of Fossil Mammals

edited by

Leonid Recovets

submission deadline 31 Dec 2025 | Viewed by 125 | Submission Open

Keywords: fossil mammals; morphometrics; ancient DNA; phylogenetic reconstruction; evolutionary dynamics; paleoecology

(This special issue belongs to the Section Animal Diversity)

Alien Species Management: From Scientific Discovery to Policy Implementation

edited by

Andrea Bonifazi

submission deadline 31 Dec 2025 | Viewed by 113 | Submission Open

Keywords: nis; alien species; invasive species; policy implementation

(This special issue belongs to the Section Marine Diversity)

Patterns Of Marine Benthic Biodiversity

edited by

Marcos Rubal

Puri Veiga

and

Diego Carreira-Flores

submission deadline 2 Jan 2026 | 4 articles | Viewed by 6101 | Submission Open

Keywords: intertidal; subtidal; rocky shores; sandy shores; estuaries; anthropogenic disturbance; environmental gradients

(This special issue belongs to the Section Marine Diversity)

Ecology and Conservation of Marine Megafauna—2nd Edition

edited by

José Carlos Báez

submission deadline 15 Jan 2026 | Viewed by 175 | Submission Open

Keywords: bycatch; climate variability; ecological risk assessment; ecosystem approach; conservation management; marine protected areas

(This special issue belongs to the Section Biodiversity Conservation)

Aquatic Plant Diversity, Conservation, and Restoration

edited by

Danelle Larson

and

Eva Papastergiadou

submission deadline 30 Jan 2026 | 8 articles | Viewed by 23310 | Submission Open

Keywords: aquatic vegetation; biodiversity; macrophytes; freshwater; resilience

(This special issue belongs to the Section Plant Diversity)

The Applications of Emerging Technologies on Biodiversity Conservation

edited by

Xinhai Li

and

Guiming Wang

submission deadline 31 Jan 2026 | 6 articles | Viewed by 12948 | Submission Open

Keywords: acoustic monitoring; AI-based method; generative pre-trained transformer; satellite; drone; robot

(This special issue belongs to the Section Biodiversity Conservation)

Foraminiferal Research: Modern Approaches and Emerging Trends

edited by Patricia Eichler, Moab Praxedes Gomes and Jere H. Lipps

submission deadline 31 Jan 2026 | 3 articles | Viewed by 3747 | Submission Open

Keywords: foraminiferal studies; environmental monitoring; paleoclimate reconstruction; biogeography

(This special issue belongs to the Section Marine Diversity)

Diversity, Phylogeny and Ecology of Marine Microorganisms

edited by

Cong Sun

, Lin Xu, Jianyang Li and

Angelina Lo Giudice

submission deadline 31 Jan 2026 | 1 articles | Viewed by 685 | Submission Open

Keywords: marine ecosystem; microbial diversity and evolution; microbial ecology and environmental adaptation; phylogeny of bacteria and archaea

(This special issue belongs to the Section Microbial Diversity and Culture Collections)

Diversity, Physiology and Ecology of Marine Microorganisms

edited by Xianzhe Gong and

Weizhi Song

submission deadline 31 Jan 2026 | Viewed by 420 | Submission Open

Keywords: diversity; ecology; physiology; microbiology; ocean

(This special issue belongs to the Section Marine Diversity)

Diversity and Systematics of Plant-Associated Fungi

edited by Jiwen Xia,

Jian Ma

and

Xiuguo Zhang

submission deadline 31 Jan 2026 | Viewed by 221 | Submission Open

Keywords: fungi diversity; systematics; plant-associated fungi

Microbial Diversity in Changing Ecosystems: From Environmental Adaptation Mechanisms to Applications

edited by

Ipek Kurtboke

submission deadline 31 Jan 2026 | Viewed by 215 | Submission Open

Keywords: microbial conservation; ecosystem functioning; biodiversity monitoring; environmental microbiology; culture collections

(This special issue belongs to the Section Microbial Diversity and Culture Collections)

Coral Reef Ecology and Diversity Conservation

edited by

Anthony D. Montgomery

and

Dan A. Polhemus

submission deadline 31 Jan 2026 | Viewed by 205 | Submission Open

Keywords: coral reefs; mesophotic coral ecosystems; climate change; policy and management; cryptic biodiversity; unique habitats; taxonomic impediments; ecosystem services; natural infrastructure

(This special issue belongs to the Section Biodiversity Conservation)

Plant Signals Driving Resilience Against Abiotic and Biotic Stresses

edited by

Rosa Rao

and Valeria Castaldi

submission deadline 31 Jan 2026 | Viewed by 171 | Submission Open

Keywords: plant immunity; stress signaling; plant defense; environmental stress; drought; salinity; heat/cold; nutrient deficiency; oxidative stress; transcriptomics/proteomics; metabolomics; pathogens (fungi; bacteria; viruses); insect herbivores; ecological impact of stress resilience

(This special issue belongs to the Section Plant Diversity)

Spatial and Temporal Studies in Marine Protected Areas: Mexican Chapter—2nd Edition

edited by

Marlenne Manzano-Sarabia

submission deadline 31 Jan 2026 | Viewed by 56 | Submission Open

Keywords: marine protected areas; Ramsar sites; islands; wetlands; climate change; ocean warming; Gulf of California; California current system; Mexican Pacific; Gulf of Mexico

(This special issue belongs to the Section Marine Diversity)

Undersea Refuges: Functional Ecology and Biodiversity of Coral Reef Ecosystems

edited by

Joaquín Rodrigo Garza Pérez

submission deadline 10 Feb 2026 | 1 articles | Viewed by 138 | Submission Open

Keywords: coral; biodiversity; ecology

(This special issue belongs to the Section Marine Diversity)

Advances in Hymenoptera Diversity and Biology

edited by Jiao Tang and

Aleš Gregorc

submission deadline 15 Feb 2026 | 1 articles | Viewed by 736 | Submission Open

Keywords: Hymenoptera; diversity; biology; genetic diversity; conservation; biotechnological approaches

Apoidea Biology, Evolution and Management

edited by Daniel M. Sánchez and Jovani Ruiz-Toledo

submission deadline 15 Feb 2026 | Viewed by 286 | Submission Open

Keywords: Apoidea; bees; evolution and biology; systematics; ecology; conservation; pollination; integrated pest management (IPM); phylogenetics; applied entomology

(This special issue belongs to the Section Animal Diversity)

Montane Ecosystems and Diversity—2nd Edition

edited by

Nigel Barker

submission deadline 15 Feb 2026 | Viewed by 118 | Submission Open

Keywords: mountain biodiversity; climate change; altitudinal gradients; refugia; conservation; ecosystem services; endemism; genetic diversity; biological invasions and other threats

(This special issue belongs to the Section Biodiversity Conservation)

Challenges for Hymenoptera in the Anthropocene

edited by

Bruno Barbosa

and

Guy Smagghe

submission deadline 24 Feb 2026 | Viewed by 469 | Submission Open

Keywords: Hymenoptera; Anthropocene; environmental change; intrinsic factors; adaptive mechanisms; conservation strategies

Emerging Effects of Pollinator Loss on Biodiversity

edited by

Ekaterina Kozuharova

and

Toshko Ljubomirov

submission deadline 28 Feb 2026 | 4 articles | Viewed by 15520 | Submission Open

Keywords: pollination and pollinator communities; insect conservation; pollination ecology; plant– pollinator interactions; plant– pollinator networks; Hymenoptera; Lepidoptera; Diptera

(This special issue belongs to the Section Plant Diversity)

Diversity and Phylogenetics of Parasites in Aquatic Animals

edited by

Joanna Dzido

and Martina Orosová

submission deadline 28 Feb 2026 | 3 articles | Viewed by 10079 | Submission Open

Keywords: biodiversity; genetic diversity; phylogeny; taxonomy; distibution; systematics; biogeography; evolution; ecology

(This special issue belongs to the Section Animal Diversity)

Diversity and Ecology of Freshwater Plankton

edited by

István Gyulai

Berta Csaba

and

István Grigorszky

submission deadline 28 Feb 2026 | 6 articles | Viewed by 6566 | Submission Open

Keywords: algae; zooplankton; community composition; biodiversity and conservation; population and community ecology; indicator species; aquatic food webs; environmental monitoring

(This special issue belongs to the Section Freshwater Biodiversity)

Wetland Biodiversity and Ecosystem Conservation

edited by

Lele Liu

, Yaolin Guo, Youzheng Zhang and Weihua Guo

submission deadline 28 Feb 2026 | 8 articles | Viewed by 6173 | Submission Open

Keywords: wetland biodiversity; ecosystem conservation; global change biology; anthropogenic disturbance; biological invasion

(This special issue belongs to the Section Biodiversity Conservation)

Ecology and Diversity of Diptera in the Tropics

edited by

Felipe Arley Costa Pessoa

submission deadline 28 Feb 2026 | 2 articles | Viewed by 4865 | Submission Open

Keywords: phylogeny; species diversity; tropics; functional ecology; diversity of applied knowledge in the forensic and medical fields

Canopy Ecology—Biodiversity, Functions, and Conservation

edited by

José Juan Flores-Martínez

and

Víctor Sánchez-Cordero

submission deadline 28 Feb 2026 | 1 articles | Viewed by 1254 | Submission Open

Keywords: arboreal ecosystems; epiphytes; vertical stratification; canopy– atmosphere interactions; treetop conservation

(This special issue belongs to the Section Plant Diversity)

Wetland Ecosystems: Diversity, Threats, Resilience and Adaptation in the Context of Increased Climate Change

edited by

Mohamed Dakki

submission deadline 28 Feb 2026 | 1 articles | Viewed by 239 | Submission Open

Keywords: wetland ecosystems; flora; fauna; waterbirds; ecology; diversity; threats; climate change; conservation management; resilience; adaptation

(This special issue belongs to the Section Biogeography and Macroecology)

Paleohistological Studies in Marine Vertebrates: Evolution, Adaptation, and Microstructural Diversity

edited by

Marianella Talevi

and Caro Acosta Hospitaleche

submission deadline 28 Feb 2026 | Viewed by 166 | Submission Open

Keywords: histology; osteohistology; bone microstructure; marine vertebrates

(This special issue belongs to the Section Phylogeny and Evolution)

Biodiversity, Community Structure and Ecology of Terrestrial Ecosystems Under Global Change

edited by Libin Yang, Shibing Zhu,

Guangze Jin

and Huilin Han

submission deadline 28 Feb 2026 | Viewed by 108 | Submission Open

Keywords: global change; microbial community assembly; biogeochemical cycling; ecosystem functioning

(This special issue belongs to the Section Biodiversity Conservation)

Microbial Community Dynamics and Ecological Functions in Wetlands

edited by

Genoveva F. Esteban

and Xia Yuan

submission deadline 28 Feb 2026 | Viewed by 83 | Submission Open

Keywords: wetland ecosystems; microbial ecology; community diversity; population dynamics; biogeochemical cycling; microbial adaptation; ecosystem functioning; emerging contaminants; mixed contaminant effects; ecotoxicology; ecosystem resilience; wetland conservation

(This special issue belongs to the Section Microbial Diversity and Culture Collections)

Invasive Species in Freshwater Ecosystems in the Americas

edited by