Article, 2024
Responses of the hyper‐diverse community of canopy‐dwelling Hymenoptera to oak decline
Insect Conservation and Diversity,
ISSN
1752-458X,
1752-4598,
Volume 17,
3,
Pages 430-448,
10.1111/icad.12708
Contributors
Le Souchu, Elodie
0000-0002-8186-0349
(Corresponding author)
[1]
Cours, Jérémy
0000-0003-4179-2350
[2]
[3]
Cochenille, Thomas
0009-0007-9446-4971
[1]
Bouget, Christophe
[3]
Bankhead-Dronnet, Stéphanie
[1]
Braet, Yves
0000-0001-7583-0656
[4]
[5]
Burguet, P
[6]
Gabard, C
[1]
Galkowski, Christophe
[7]
Gereys, B
[8]
Herbrecht, F
[9]
Joncour, B
[1]
Marhic, E
[10]
Michez, Denis
0000-0001-8880-1838
[11]
Buhl, Peter Neerup
[12]
Noblecourt, Thierry
[13]
Notton, David G
0000-0002-8933-7915
[14]
Penigot, W
[15]
Rasplus, Jean-Yves
0000-0001-8614-6665
[16]
Robert, T
[17]
Staverløkk, Arnstein
[18]
Vincent-Barbaroux, Cécile
0000-0001-9521-4906
[1]
Sallé, Aurélien
0000-0003-3876-9272
[1]
Affiliations
- [1]
University of Orléans
[NORA names:
France; Europe, EU; OECD];
- [2]
University of Jyväskylä
[NORA names:
Finland; Europe, EU; Nordic; OECD];
- [3]
UR EFNO, INRAE, Domaine des Barres, Nogent‐sur‐Vernisson, France
[NORA names:
France; Europe, EU; OECD];
- [4]
Gembloux Agro-Bio Tech
[NORA names:
Belgium; Europe, EU; OECD];
- [5]
Royal Belgian Institute of Natural Sciences
[NORA names:
Belgium; Europe, EU; OECD];
(... more)
- [6]
Cébazat, France
[NORA names:
France; Europe, EU; OECD];
- [7]
Société Linnéenne de Bordeaux, Bordeaux, France
[NORA names:
France; Europe, EU; OECD];
- [8]
Oraison, France
[NORA names:
France; Europe, EU; OECD];
- [9]
Sainte‐Anne‐sur‐Vilaine, France
[NORA names:
France; Europe, EU; OECD];
- [10]
Maurecourt, France
[NORA names:
France; Europe, EU; OECD];
- [11]
University of Mons
[NORA names:
Belgium; Europe, EU; OECD];
- [12]
University of Copenhagen
[NORA names:
KU University of Copenhagen;
University; Denmark; Europe, EU; Nordic; OECD];
- [13]
Réseau entomologie de l'Office National des Forêts, Antugnac, France
[NORA names:
France; Europe, EU; OECD];
- [14]
Invertebrates Section, Natural Sciences Department, National Museums Collection Centre, Edinburgh, Scotland
[NORA names:
United Kingdom; Europe, Non-EU; OECD];
- [15]
Saint‐Juéry, France
[NORA names:
France; Europe, EU; OECD];
- [16]
University of Montpellier
[NORA names:
France; Europe, EU; OECD];
- [17]
Baccarat, France
[NORA names:
France; Europe, EU; OECD];
- [18]
Norwegian Institute for Nature Research
[NORA names:
Norway; Europe, Non-EU; Nordic; OECD]
(less)
Abstract
Abstract Forest decline and dieback are growing phenomena worldwide, resulting in severe, large‐scale degradation of the canopy. This can profoundly alter the provision of trophic resources and microhabitats for canopy‐dwelling arthropods. In 2019, we assessed the effect of oak decline on the community of canopy‐dwelling Hymenoptera. We selected 21 oak stands and 42 plots, located in three forests in France, presenting contrasting levels of decline. Insects were sampled at the canopy level with green multi‐funnel and flight‐interception traps. We collected a particularly diverse community of 19,289 insect individuals belonging to 918 taxa, 10 larval trophic guilds and 7 nesting guilds. Oak decline had no effect on the abundance or richness of the overall community but significantly reshaped the community assemblages. Decline had contrasting effects depending on the taxa and guilds considered. Specialist parasitoids were more abundant at intermediate levels of decline severity while generalists were negatively affected. Taxa depending on ground‐related resources and microhabitats were promoted. Saproxylic taxa were more abundant while xylophagous insects were negatively impacted. Reduced leaf area index promoted several guilds and the diversity of the overall community. While an increasing tree mortality rate enhanced the abundance and diversity of deadwood resources, it had negative impacts on several Hymenoptera guilds. Our results suggest that micro‐environmental changes at the ground level due to canopy decline have major cascading effects on the communities of canopy‐dwelling Hymenoptera. Our study highlights the relevance of studying Hymenoptera communities to investigate the outcomes of disturbances on forest biodiversity.
Keywords
Abstract,
France,
Hymenoptera,
Hymenoptera community,
abundance,
area index,
arthropods,
assemblages,
biodiversity,
canopy,
canopy decline,
canopy level,
canopy-dwelling arthropods,
cascade,
cascading effects,
changes,
community,
community assemblages,
deadwood resources,
decline,
decline severity,
degradation,
dieback,
disturbances,
diverse communities,
diversity,
effect,
flight interception traps,
forest,
forest biodiversity,
forest decline,
generalists,
ground,
ground level,
guilds,
hyper-diverse communities,
impact,
increased tree mortality rates,
index,
individuals,
insect individuals,
insects,
intermediate levels,
large-scale degradation,
larval,
leaf area index,
level of decline,
levels,
micro-environmental changes,
microhabitat,
mortality rate,
multi-funnel,
negative impact,
nesting guilds,
no effect,
oak,
oak decline,
outcome of disturbances,
outcomes,
overall community,
parasitoids,
phenomenon,
plots,
provision,
rate,
reduced leaf area index,
relevance,
resources,
response,
richness,
saproxylic taxa,
severity,
specialist parasitoid,
study,
taxa,
traps,
tree mortality rates,
trophic guilds,
trophic resources,
xylophagous insects
Data Provider: Digital Science