Null models for study Rotifers and Crustaceans Zooplankton species richness in Chilean Patagonian lakes

Escalante, Patricio de los Ríos

doi:10.1590/S2179-975X2016

Acessibilidade / Reportar erro

Brasil

Acta Limnologica Brasiliensia

Español English

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

Original Articles • Acta Limnol. Bras. 28 • 2016 • https://doi.org/10.1590/S2179-975X2016 copy

Null models for study Rotifers and Crustaceans Zooplankton species richness in Chilean Patagonian lakes

Modelos nulos para o estudo de riqueza de espécies de Rotíferos e Crustáceos Zooplanctônicos na Patagônia Chilena

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Aims

The Patagonian lakes are characterized by their oligotrophy that is the cause of low species number in their zooplankton assemblage. The aim of the present study is to analyze the crustacean and rotifers species number pattern in Patagonian lakes among a latitudinal gradient (40-51 °S).

Results

The results revealed that there are direct significant correlations between total species with rotifer species, and chlorophyll concentration with crustacean species number, and an inverse association between latitude with total species.

Conclusion

The results of co-occurrence species null model revealed presence of regulator factors in one of three simulations, that would be due to the presence of many species repeated in studied sites. Similar patterns were observed in Argentinean Patagonian lakes.

Keywords:
crustacean; rotifers; zooplankton; species number

	Lat. S, Long W.	Zmax	Surface	Chlorophyll “a”	Rotifer	Crustacean
Puyehue	40°40' 72°30’	123	165.4	2.1	6	7
Rupanco	40°50' 72°30’	272	235.0	1.2	9	4
Todos los Santos	41°08' 72°50’	335	178.5	0.4	9	4
Llanquihue	41°08' 72°50’	317	870.5	0.5	12	3
Los Palos	45°19' 72°42’	59	5.0	0.8	12	4
Riesco	45°39' 72°20’	130	14.7	0.9	9	4
Escondida	45°49' 72°40’	43	7.0	0.5	9	5
Del Toro	51°03' 72°38’	312	86.0	0.3	2	5
Sarmiento	51°12' 72°37’	300	196.0	0.4	5	4

	Del Toro	Sarmiento	Escondida	Riesco	Los Palos	Llanquihue	Todos Los Santos	Rupanco	Puyehue
Crustacea
Daphnia pulex (Leydig 1860)	0	0	0	0	0	0	1	1	0
Ceriodaphnia dubia (Richard 1894)	0	0	1	1	1	0	0	1	1
Neobosmina chilensis (Daday 1902)	0	1	1	1	1	1	1	1	1
Diaphanosoma chilense (Daday 1902)	0	0	0	0	0	0	0	1	1
Tumeodiaptomus diabolicus (Brehm 1935)	0	0	0	0	0	0	0	1	1
Boeckella gracilipes (Daday 1901)	1	1	1	1	1	1	1	0	0
Boeckella michaelseni (Mrazek 1901)	1	1	0	0	0	0	0	0	0
Parabroteas sarsi (Ekman 1905)	0	0	1	1	1	0	0	0	0
Tropocyclops prasinus meridionalis (Kiefer 1927)	1	1	1	1	1	0	0	0	1
Mesocyclops araucanus (Löffler 1962)	1	1	1	1	1	1	1	0	1
Rotifera
Ascomorpha sp. (Perty 1850)	0	0	0	0	0	1	1	0	0
Asplanchna (Gosse 1850)	0	0	1	1	1	0	0	0	0
Collotheca pellagica (Rousselet 1893)	0	0	1	1	1	1	1	1	1
Conochiloides coenobastis (Hudson 1885)	0	0	0	0	0	0	0	0	1
Conochilus unicornis (Rousselet 1892)	0	1	1	1	1	1	1	1	1
Euchalanis sp. (Ehrenberg 1832)	1	1	0	0	0	0	0	0	0
Filinia longiseta (Ehremberg 1834)	0	0	1	1	1	0	0	0	0
Gastropus sp. (Inhof 1898)	0	0	1	1	1	0	0	0	0
Keratella cochlearis cochlearis (Gosse 1851)	0	0	1	1	1	1	1	1	1
Keratella gracilienta Alstrom	0	0	0	0	0	0	0	1	0
Lecane luna (Müller 1776)	0	0	1	1	1	0	0	0	0
Monostyla lunaris (Ehrenberg 1832)	1	1	0	0	0	1	0	0	0
Notholca caudata (Carlin 1943)	0	1	0	0	0	0	0	0	0
Polyartha dolichoptera (Idelson 1925)	0	0	0	0	0	1	1	1	1
P. vulgaris (Carlin 1943)	0	1	1	1	1	1	0	0	0
Pompholyx sulcata (Hudson 1855)	0	0	0	0	0	1	1	0	0
Synchaeta sp. (Ehremberg 1832)	0	0	1	1	1	0	0	0	0
S. stylata (Wierzejski 1893)	0	0	0	0	0	1	1	1	0
Tricocerca (Lamarck 1801)	0	0	0	0	0	0	0	0	1
T. porcellus (Gosse 1851)	0	0	0	0	0	1	1	1	0
T. similis (Wierzejski 1893)	0	0	0	0	0	0	0	1	0
Phylodina indet	0	0	1	1	1	0	0	0	0
Rotatoria indet.	0	0	0	0	0	0	0	1	0
Bdelloida indet.	0	0	0	0	0	1	1	0	0

	Rho	P
Latitude – Rotifera	–0.386	0.304 n.s
Zmax – Rotifera	–0.131	0.736 n.s
Surface – Rotifera	0.043	0.911 n.s
Chlorophyll – Rotifera	0.321	0.398 n.s
Latitude – crustacea	–0.036	0.925 n.s
Zmax – crustacea	–0.477	0.194 n.s
Surface – crustacea	–0.477	0.194 n.s
Chlorophyll – crustacea	0.106	0.785 n.s
Latitude – total	0.362	0.337 n.s
Zmax – total	–0.391	0.297 n.s
Surface – total	–0.226	0.558 n.s
Chlorophyll – total	0.381	0.310 n.s

Total species
Models	Observed index	Mean index	Standard effect size	Variance	P
Fixed-fixed Total species: 34	3.019	2.667	10.444	0.002	<0.001 ^* * “P” values lower than 0.05 denotes the presence of regulator factors.
Fixed-fixed Rotifer species: 24	3.511	3.064	3.663	0.014	0.004 ^* * “P” values lower than 0.05 denotes the presence of regulator factors.
Fixed-fixed Crustacean species: 10	2.858	2.526	7.586	0.001	<0.001 ^* * “P” values lower than 0.05 denotes the presence of regulator factors.

	Masses	Total quality	Inertia value
Crustacea
D. pulex	17	575	34
C. dubia	43	630	15
N. chilensis	68	120	3
D. chilense	17	446	36
T. diabolicus	17	446	36
B. gracilipes	60	762	16
B. michaelseni	17	876	70
P. sarsi	26	961	22
T. prasinus meridionalis	51	638	23
M. araucanus	68	690	10
Rotifera
Ascomorpha sp.	17	290	34
Asplanchna	26	961	22
C. pellagica	60	857	6
C. coenobastis	9	68	45
C. unicornis	68	120	3
Euchalanis sp.	17	876	70
F. longiseta	26	961	22
Gastropus sp.	26	961	22
K. cochlearis cochlearis	60	857	6
K. gracilienta	9	413	38
L. luna	26	961	22
M. lunaris	26	890	52
N. caudata	9	418	55
P. dolichoptera	34	894	25
P. vulgaris	43	439	17
P. sulcata
Synchaeta sp.	26	733	29
S. stylata	26	961	22
Tricocerca	9	69	45
T. porcellus	26	733	29
T. similis	9	413	38
Phylodina indet	26	991	22
Rotatoria indet.	9	413	38
Bdelloida indet.	17	290	34
Sites
Puyehue	103	131	153
Rupanco	120	612	193
Todos los Santos	111	413	105
Llanquihue	120	316	89
Los Palos	137	980	57
Riesco	137	980	57
Escondida	137	980	57
Del Toro	51	783	147
Sarmiento	85	787	142

Associação Brasileira de Limnologia Av. 24 A, 1515, 13506-900 Rio Claro-SP/Brasil, Tel.:(55 19)3526 4227 - Rio Claro - SP - Brazil
E-mail: actalimno@gmail.com

Acompanhe os números deste periódico no seu leitor de RSS

[1] *e-mail: prios@uct.cl