ResultsSpecies compositionIn total,

Results

Species composition

In total, 206 species of desmids and 105 diatom species were recovered from the peatland samples (Supplementary Tables 2 and 3). The Procrustes analysis of the NMDS ordinations of desmid and diatom datasets demonstrated their non-random congruence (Procrustes correlation r = 0.77, P < 0.001; Fig. 1). However, the relatively large residual distances among identical sites in both ordinations suggested that the community structure of desmids and diatoms did not follow exactly the same patterns relative to the abiotic and spatial factors. This was confirmed by further analyses. The species composition of desmids was most tightly controlled by the pH values of localities (Table 1). The permutational MANOVA model explained approximately 43% of the variation in the species data. Conductivity was the second most important factor, while the effect of spatial distance among localities on the species composition of desmids was also significant. The ombro-minerotrophy gradient and Ca concentrations were correlated with the pH values (Table 2), but they did not account for much of the additional variation in the desmid species data that was not related to the pH gradient (Table 1). However, the effect of the ombro-minerotrophy gradient was still marginally significant, even after accounting for the effect of pH. The other abiotic factors had no significant effects on the species composition of desmids in the samples. The species composition of diatoms was also primarily controlled by pH (Table 1). The permutational MANOVA model accounted for about 55% of the total variation. Similar to the desmids, conductivity and spatial distance had the second and third most significant effects on the species composition, which were not related to the pH gradient (Table 1). The ombro-minerotrophic gradient and Ca concentrations, i.e., two abiotic factors that were largely covered by the variation in the pH values, were also marginally significant. The effects of other factors, including the total nitrogen and phosphorus, were not significant.

Hasil (Bahasa Indonesia) 1:

HasilKomposisi spesiesSecara total, 206 jenis desmids dan 105 spesies diatom pulih dari lahan gambut sampel (tambahan tabel 2 dan 3). Analisis Procrustes pentahbisan NMDS desmid dan diatom dataset menunjukkan mereka harmoni yang non-acak (Procrustes korelasi r = 0.77, P < 0.001; Fig. 1). Namun, sisa jarak relatif besar antara identik situs di kedua pentahbisan menyarankan bahwa struktur komunitas desmids dan Diatom tidak mengikuti pola yang sama dibandingkan faktor abiotik dan spasial. Hal ini diperkuat oleh analisis lebih lanjut. Komposisi spesies desmids paling ketat dikontrol oleh nilai-nilai pH pemukiman (Tabel 1). Permutational MANOVA model menjelaskan sekitar 43% dari variasi dalam jenis data. Konduktivitas adalah faktor terpenting kedua, sementara efek spasial jarak antara daerah pada komposisi spesies desmids juga penting. Gradien ombro-minerotrophy dan Ca konsentrasi berkorelasi dengan nilai pH (Tabel 2), tetapi mereka tidak account untuk sebagian besar variasi tambahan dalam spesies desmid data yang tidak berhubungan dengan pH gradien (Tabel 1). Namun, efek gradien ombro-minerotrophy adalah masih marginal signifikan, bahkan setelah akuntansi untuk efek pH. Faktor-faktor lain yang abiotik memiliki efek signifikan pada komposisi spesies desmids dalam sampel. Komposisi spesies Diatom juga terutama dikontrol oleh pH (Tabel 1). Permutational MANOVA model menyumbang sekitar 55% dari total variasi. Mirip dengan desmids, konduktivitas dan ruang jarak memiliki kedua dan ketiga paling signifikan efek pada komposisi spesies, yang tidak berhubungan dengan pH gradien (Tabel 1). Gradien ombro-minerotrophic dan Ca konsentrasi, yaitu dua faktor abiotik yang sebagian besar ditutupi oleh variasi dalam nilai pH, yang juga marginal signifikan. Efek dari faktor-faktor lain, termasuk total nitrogen dan fosfor, itu tidak signifikan.