Citation:

geb.12835

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Abstract:

Aim: To quantify the influence of past archipelago configuration on present-day insular biodiversity patterns, and to compare the role of long-lasting archipelago configurations over the Pleistocene to configurations of short duration such as at the Last Glacial Maximum (LGM) and the present-day.

Location: 53 volcanic oceanic islands from 12 archipelagos worldwide - Azores, Canary Islands, Cook Islands, Galápagos, Gulf of Guinea, Hawaii, Madeira, Mascarenes, Pitcairn, Revillagigedo, Samoan Islands, and Tristan da Cunha.

Time period: The last 800 Kyr, representing the nine most recent glacial-interglacial cycles.

Major taxa studied: Land snails and angiosperms.

Methods: Species richness data for land snails and angiosperms were compiled from existing literature and species checklists. We reconstructed archipelago configurations at the following sea-levels: the present-day high interglacial sea-level, the intermediate sea-levels that are representative of the Pleistocene, and the low sea-levels of the LGM. We fitted two alternative linear mixed models for each archipelago configuration on the number of single-island endemic, multiple-island endemic, and native non-endemic species. Model performance was assessed based on the goodness-of-fit of the full model, the variance explained by archipelago configuration, and model parsimony.

Results: Single-island endemic richness in both taxonomic groups was best explained by intermediate palaeo-configuration (positively by area change, and negatively by palaeo-connectedness), whereas non-endemic native species richness was poorly explained by palaeo-configuration. Single-island endemic richness was better explained by intermediate archipelago configurations than by the archipelago configurations of the LGM or present-day.

Main conclusions: Archipelago configurations at intermediate sea-levels - which are representative of the Pleistocene - have left a stronger imprint on single-island endemic richness patterns on volcanic oceanic islands than extreme archipelago configurations that persisted for only a few thousand years (such as the LGM). In understanding ecological and evolutionary dynamics of insular biota it is essential to consider longer-lasting environmental conditions, rather than extreme situations alone.

Related to:

Norder, Sietze Johannes; Baumgartner, John B; Borges, Paulo A V; Hengl, Tomislav; Kissling, W Daniel; van Loon, E Emiel; Rijsdijk, Kenneth F (2017): Paleo Islands and Archipelago Configuration (PIAC) database. PANGAEA, https://doi.org/10.1594/PANGAEA.880585

Norder, Sietze Johannes; Baumgartner, John B; Borges, Paulo A V; Hengl, Tomislav; Kissling, W Daniel; van Loon, E Emiel; Rijsdijk, Kenneth F (2018): A global spatially explicit database of changes in island palaeo-area and archipelago configuration during the late Quaternary. Global Ecology and Biogeography, https://doi.org/10.1111/geb.12715

Coverage:

Median Latitude: 6.825830 * Median Longitude: -69.972946 * South-bound Latitude: -40.318810 * West-bound Longitude: -170.717620 * North-bound Latitude: 39.699100 * East-bound Longitude: 63.421350

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Area/locality	Area		Norder, Sietze Johannes	Island
2	Area/locality	Area		Norder, Sietze Johannes	Archipelago
3	LATITUDE	Latitude		Norder, Sietze Johannes	Geocode
4	LONGITUDE	Longitude		Norder, Sietze Johannes	Geocode
5	Land snail species richness	Land snail S	#	Norder, Sietze Johannes	Single-island endemic
6	Land snail species richness	Land snail S	#	Norder, Sietze Johannes	Multiple-island endemic
7	Land snail species richness	Land snail S	#	Norder, Sietze Johannes	Native (non-endemic)
8	Land snail species richness	Land snail S	#	Norder, Sietze Johannes	Palaeo-island endemic at median sea-level
9	Land snail species richness	Land snail S	#	Norder, Sietze Johannes	Palaeo-island endemic at most frequent sea-level
10	Land snail species richness	Land snail S	#	Norder, Sietze Johannes	Palaeo-island endemic at a sea-level of -122m
11	Land snail species richness	Land snail S	#	Norder, Sietze Johannes	Palaeo-island endemic at glacial maximum sea-level
12	Angiosperm species richness	Angiosperm S	#	Norder, Sietze Johannes	Single-island endemic
13	Angiosperm species richness	Angiosperm S	#	Norder, Sietze Johannes	Native (non-endemic)
14	Angiosperm species richness	Angiosperm S	#	Norder, Sietze Johannes	Palaeo-island endemic at a sea-level of -122m
15	Distance	Distance	km	Norder, Sietze Johannes	Of current isolation
16	Number	No		Norder, Sietze Johannes	Palaeo-connectedness at median sea-level
17	Number	No		Norder, Sietze Johannes	Palaeo-connectedness at most frequent sea-level
18	Number	No		Norder, Sietze Johannes	Palaeo-connectedness at a sea-level of -122m
19	Number	No		Norder, Sietze Johannes	Palaeo-connectedness at glacial maximum sea-level
20	Log info	Log		Norder, Sietze Johannes	Log-transformed current area
21	Log info	Log		Norder, Sietze Johannes	Log-transformed area at median sea-level
22	Log info	Log		Norder, Sietze Johannes	Log-transformed area at most frequent sea-level
23	Log info	Log		Norder, Sietze Johannes	Log-transformed area at a sea-level of -122m
24	Log info	Log		Norder, Sietze Johannes	Log-transformed area at glacial maximum sea-level

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

1166 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Area (Island)	2 Area (Archipelago)	3 Latitude	4 Longitude	5 Land snail S [#] (Single-island endemic)	6 Land snail S [#] (Multiple-island endemic)	7 Land snail S [#] (Native (non-endemic))	8 Land snail S [#] (Palaeo-island endemic at medi...)	9 Land snail S [#] (Palaeo-island endemic at most...)	10 Land snail S [#] (Palaeo-island endemic at a se...)	11 Land snail S [#] (Palaeo-island endemic at glac...)	12 Angiosperm S [#] (Single-island endemic)	13 Angiosperm S [#] (Native (non-endemic))	14 Angiosperm S [#] (Palaeo-island endemic at a se...)	15 Distance [km] (Of current isolation)	16 No (Palaeo-connectedness at media...)	17 No (Palaeo-connectedness at most ...)	18 No (Palaeo-connectedness at a sea...)	19 No (Palaeo-connectedness at glaci...)	20 Log (Log-transformed current area)	21 Log (Log-transformed area at media...)	22 Log (Log-transformed area at most ...)	23 Log (Log-transformed area at a sea...)	24 Log (Log-transformed area at glaci...)
Corvo	Azores	39.69910	-31.10522	2	10	16	2	2	2	2	0	98	2	16	1	1	1	1	1.23	1.34	1.46	1.58	1.59
Faial	Azores	38.57822	-28.70133	1	16	22	1	1	4	4	0	124	0	5	1	1	2	2	2.24	1.56	2.75	2.78	2.79
Flores	Azores	39.44195	-31.20249	5	13	22	5	5	5	5	0	120	2	16	1	1	1	1	2.15	1.88	2.05	2.27	2.3
Graciosa	Azores	39.05229	-28.01133	3	12	20	3	3	3	3	0	73	0	37	1	1	1	1	1.78	1.5	1.68	1.95	1.97
Pico	Azores	38.46947	-28.33357	0	18	22	0	0	3	3	0	133	0	5	1	1	2	2	2.65	1.62	2.46	2.52	2.54
Santa Maria	Azores	36.97133	-25.09982	23	6	22	23	23	23	23	1	102	1	80	1	1	1	1	1.99	1.8	1.89	2.06	2.07
São Jorge	Azores	38.63723	-28.02924	0	18	20	0	0	0	0	0	122	0	17	1	1	1	1	2.39	1.89	2.03	2.23	2.25
São Miguel	Azores	37.79540	-25.48189	13	12	24	13	13	13	13	1	135	1	80	1	1	1	1	2.87	2.29	2.41	2.58	2.59
Terceira	Azores	38.72390	-27.21230	3	16	20	3	3	3	3	0	130	0	38	1	1	1	1	2.6	1.89	2.1	2.32	2.34
Fuerteventura	Canary_Islands	28.40611	-14.03649	23	15	6	33	33	33	33	10	516	29	12	2	2	2	2	3.22	3.39	3.46	3.52	3.53
Gran Canaria	Canary_Islands	27.95482	-15.59319	43	8	18	43	43	43	43	86	716	86	59	1	1	1	1	3.2	2.79	2.92	3	3.01
El Hierro	Canary_Islands	27.74653	-18.00662	13	6	13	13	13	13	13	15	484	15	61	1	1	1	1	2.44	1.76	1.84	2.03	2.04
La Gomera	Canary_Islands	28.11741	-17.23261	66	9	12	66	66	66	66	40	569	40	28	1	1	1	1	2.57	2.16	2.34	2.61	2.63
La Palma	Canary_Islands	28.68988	-17.85833	23	9	19	23	23	23	23	36	563	36	58	1	1	1	1	2.86	1.98	2.05	2.18	2.2
Lanzarote	Canary_Islands	29.02448	-13.64182	14	13	7	24	24	24	24	12	485	30	12	2	2	2	2	2.91	3.52	3.57	3.62	3.63
Tenerife	Canary_Islands	28.29106	-16.55631	63	8	25	63	63	63	63	104	799	104	28	1	1	1	1	3.31	2.53	2.6	2.69	2.69
Atiu	Cook Islands	-19.99568	-158.11443	1	2	7	1	1	1	1	0	99	0	78	1	1	1	1	1.47	1.03	1.09	1.19	1.21
Mangaia	Cook Islands	-21.92813	-157.91943	1	2	9	1	1	1	1	0	113	0	197	1	1	1	1	1.69	0.05	0.55	0.92	0.96
Mauke	Cook Islands	-20.16117	-157.34143	0	1	4	0	0	0	0	0	82	0	78	1	1	1	1	1.31	0.97	1.07	1.24	1.26
Mitiaro	Cook Islands	-19.86713	-157.70220	1	2	11	1	1	1	1	3	90	3	40	1	1	1	1	1.39	1.41	1.49	1.59	1.59
Rarotonga	Cook Islands	-21.23462	-159.77755	25	2	16	25	25	25	25	13	145	13	214	1	1	1	1	1.84	1.34	1.52	1.62	1.64
Española	Galápagos Islands	-1.37840	-89.67870	2	4	0	2	2	2	2	0	104	0	45	1	1	1	1	1.81	1.66	1.77	2.03	2.06
Fernandina	Galápagos Islands	-0.38573	-91.51294	1	5	0	1	1	2	2	1	144	2	4	1	1	2	2	2.81	1.19	1.49	3.79	3.79
Floreana	Galápagos Islands	-1.29360	-90.43529	7	14	0	7	7	7	7	6	205	6	49	1	1	1	1	2.25	1.77	1.89	2.08	2.1
Isabela	Galápagos Islands	-0.55929	-91.18434	18	13	0	18	18	19	19	6	273	7	4	1	1	2	2	3.67	2.85	2.98	3.32	3.33
Pinzón	Galápagos Islands	-0.61081	-90.66579	4	3	0	4	4	4	4	1	106	1	10	1	1	1	1	1.26	0.93	1.04	1.04	1.08
San Cristobal	Galápagos Islands	-0.82680	-89.43056	8	15	0	8	8	8	8	5	232	5	45	1	1	1	1	2.75	2.39	2.49	2.66	2.68
Santa Cruz	Galápagos Islands	-0.62725	-90.35841	23	6	0	23	23	23	23	14	300	14	10	1	1	1	1	2.99	2.58	2.67	2.83	3.11
Santiago	Galápagos Islands	-0.26625	-90.71255	4	12	0	5	5	5	5	2	231	5	4	2	2	2	2	2.76	2.27	2.37	2.46	2.47
Príncipe	Gulf of Guinea	1.61539	7.39705	19	6	32	19	19	19	19	30	298	30	147	1	1	1	1	2.16	2.78	3.04	3.08	3.09
São Tomé	Gulf of Guinea	0.23899	6.60226	25	5	39	25	25	25	25	82	574	82	147	1	1	1	1	2.93	2.62	2.66	2.72	2.73
Hawaii	Hawaii	19.59808	-155.51837	92	30	4	92	92	92	92	81	310	81	47	1	1	1	1	4.02	2.57	2.68	2.84	2.86
Kauai	Hawaii	22.05836	-159.52424	100	23	4	100	100	100	100	194	299	194	28	1	1	1	1	3.16	2.56	2.62	2.68	2.68
Lanai	Hawaii	20.83499	-156.92707	31	25	2	32	37	37	37	9	248	31	14	2	3	3	3	2.56	3.42	3.67	3.72	3.73
Maui	Hawaii	20.79041	-156.33678	119	41	6	120	128	128	128	83	414	127	11	2	3	3	3	3.28	3.05	3.5	3.58	3.59
Molokai	Hawaii	21.13317	-157.01452	73	42	6	73	84	84	84	33	342	67	14	1	3	3	3	2.83	2.97	3.64	3.7	3.7
Oahu	Hawaii	21.45867	-157.97339	250	45	3	250	250	250	250	127	333	127	41	1	1	1	1	3.19	2.76	2.83	2.9	2.91
Madeira	Madeira	32.74634	-16.99913	64	25	6	64	64	64	77	72	516	72	23	1	1	1	2	2.87	2.28	2.44	2.6	2.62
Porto Santo	Madeira	33.06918	-16.34217	58	18	3	58	58	58	58	6	309	6	40	1	1	1	1	1.61	2.15	2.21	2.26	2.27
Mauritius	Mascarenes	-20.28363	57.57198	81	31	16	81	81	81	81	221	430	221	170	1	1	1	1	3.27	2.9	2.94	3.01	3.01
Réunion	Mascarenes	-21.13335	55.53268	22	26	12	22	22	22	22	218	571	218	170	1	1	1	1	3.4	2.3	2.39	2.5	2.51
Rodrigues	Mascarenes	-19.71670	63.42135	13	8	10	13	13	13	13	41	101	41	582	1	1	1	1	2.05	2.92	2.96	3.02	3.03
Henderson	Pitcairn	-24.37673	-128.32289	14	1	7	14	14	14	14	6	55	6	193	1	1	1	1	1.65	1.32	1.37	1.43	1.43
Pitcairn	Pitcairn	-25.06965	-130.10626	9	1	10	9	9	9	9	8	52	8	141	1	1	1	1	0.69	1.11	1.14	1.23	1.23
Clarion	Revillagigedo	18.35676	-114.72431	4	0	3	4	4	4	4	3	40	3	385	1	1	1	1	1.32	0.77	0.83	0.88	0.92
Socorro	Revillagigedo	18.79175	-110.97507	6	0	6	6	6	6	6	31	98	31	48	1	1	1	1	2.13	2.03	2.12	2.2	2.21
Ofu	Samoan Islands	-14.17218	-169.66373	0	8	11	1	1	1	1	0	168	1	0	2	2	2	2	0.89	1.45	1.52	1.58	1.62
Olosega	Samoan Islands	-14.17855	-169.62038	0	7	9	1	1	1	1	1	162	1	0	2	2	2	2	0.86	1.46	1.53	1.59	1.62
Tutuila	Samoan Islands	-14.30033	-170.71762	6	13	23	6	6	6	6	21	259	21	71	1	1	1	1	2.15	2.25	2.43	2.47	2.47
Gough	Tristan da Cunha	-40.31881	-9.94232	1	7	0	1	1	1	1	0	36	0	383	1	1	1	1	1.86	1.52	1.59	1.87	1.9
Inaccessible	Tristan da Cunha	-37.30050	-12.67807	1	7	0	1	1	1	1	1	24	1	19	1	1	1	1	1.17	1.11	1.29	1.53	1.56
Nightingale	Tristan da Cunha	-37.42454	-12.48388	1	4	0	1	1	1	1	1	15	1	19	1	1	1	1	0.53	1.33	1.41	1.49	1.5
Tristan da Cunha	Tristan da Cunha	-37.11244	-12.28510	1	3	0	1	1	1	1	0	33	0	32	1	1	1	1	1.99	1.55	1.6	1.64	1.67