紫苏叶片解剖结构、花色苷含量与光合特性的关系

以9个不同产地的紫苏为研究材料,比较叶片解剖结构、色素含量、光合特性的差异。结果表明:不同产地紫苏叶片均属于异面叶类型,栅栏组织均由1列排列紧密的长柱形细胞构成,其叶片海绵组织细胞2~3层,叶片下表皮有较多的气孔和腺毛,叶片气孔多为卵圆形;不同产地紫苏叶片的气孔直径和密度存在差异;其中,烟台紫苏的气孔直径最大,无锡紫苏的气孔密度最大,南京紫苏的气孔直径和密度均为最小;不同产地紫苏叶绿素和花色苷含量差异较大,叶色越紫,花色苷含量越高,叶绿素含量越低,而保定、邯郸和邢台三地紫苏同时有较高的叶绿素和花色苷含量;紫苏叶片花色苷含量与净光合速率之间存在负相关性,如烟台紫苏花色苷含量较低,其净光合速率较高,而南京紫苏花色苷含量较高,其净光合速率较低;不同产地间紫苏叶片解剖结构和叶片色素含量均存在差异,并且与净光合速率存在一定的相关性。本研究为紫苏种质资源及育种研究奠定了基础。     

田间条件下海岛棉和陆地棉花铃期叶片光保护的机制

研究海岛棉(Gossypium barbadense)和陆地棉(G. hirsutum)两个棉花栽培种的光合作用特性, 探讨两个栽培种光合机构的光抑制以及防御保护机制, 以期为新疆棉花高光效品种选育和高产高效栽培实践提供理论基础。在新疆生态气候条件下, 系统测定了海岛棉和陆地棉的叶片运动、叶片接受光量子通量密度(PFD)、叶片温度、叶绿素荧光参数、气体交换参数和光呼吸速率的日变化。研究结果表明: 陆地棉叶片的“横向日性”较强而海岛棉较弱, 导致海岛棉叶片接受PFD较低, 但其叶片温度较高。海岛棉叶片的光合速率和气孔导度均显著低于陆地棉。在8:00-10:00 (北京时间, 下同)海岛棉叶片的光呼吸速率略低于陆地棉, 其余时间段海岛棉和陆地棉叶片的光呼吸速率相似。不同栽培种间, 叶片的最大光化学效率和实际光化学效率的日变化均无明显差异。除14:00-16:00以外, 海岛棉叶片的表观电子传递速率和光化学猝灭系数均显著低于陆地棉。8:00以后, 海岛棉叶片的非光化学猝灭显著高于陆地棉。因此, 在新疆生态气候条件下, 海岛棉和陆地棉叶片“横向日性”运动能力和气孔导度的差异导致叶片所处的光温环境不同, 同时造成海岛棉叶片的碳同化能力较低。为阻止光合电子传递链的过度还原, 减轻光合机构的光抑制, 陆地棉叶片主要通过光合机构的电子流途径耗散激发能, 而海岛棉叶片通过热耗散途径和相对较高的光呼吸能力来耗散激发能。     

遮荫对月季光合特性及生长发育的影响

采用人工遮荫法研究不同程度遮荫(75%、50%和25%全光照,以全光照为对照)处理对月季的生长发育、光合特性及叶绿素荧光参数的影响。结果表明:(1)随着遮荫程度的增加,月季的叶片厚度、花径、成花率均呈降低趋势,叶绿素含量呈增加趋势;净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)、胞间CO2浓度(Ci)降低,气孔限制值(Ls)升高,Pn下降的主要原因可能为气孔限制。(2)月季在遮荫条件下的光饱和点和光补偿点、暗呼吸速率下降,表现出其对光照降低的生理适应机制;其光饱和点在600~1 200μmol·m-2·s-1,光补偿点在29.89~62.95μmol·m-2·s-1,CO2补偿点在78.16~89.41μmol·mol-1,CO2饱和点在1 100μmol·mol-1左右,潜在光合能力13.06~25.63μmol·m-2·s-1,其对光的适应范围较宽,光照和CO2浓度对其光合能力的影响较大。(3)各处理条件下叶绿素荧光参数显示,月季在自然光和低光下(50%和25%全光照)叶片PSⅡ受到了明显伤害,光合作用原初反应过程受到抑制,光合电子传递受到影响。研究发现,月季虽是阳生植物,但光照生态幅较宽,轻度遮荫(75%全光照)能促进其光合作用效率,减少光抑制,植株长势好,成花率高。     

麦冬、山麦冬叶片解剖结构与光合特性研究

以麦冬和山麦冬为材料,比较分析了叶片形态结构,以及叶绿素含量、光合参数等生理指标的差异,以期为人工栽培麦冬提供技术依据。结果显示:(1)山麦冬的气孔直径、气孔密度、每个叶肉细胞所含叶绿体数目均较麦冬多,且叶绿素和类胡萝卜素(Car)含量均显著高于麦冬。(2)麦冬和山麦冬的光补偿点(LCP)均在11μmol·m-2·s-1左右,但麦冬光饱和点(LSP)低于300μmol·m-2·s-1,而山麦冬LSP在600μmol·m-2·s-1左右,且山麦冬的表观量子效率高于麦冬。(3)麦冬和山麦冬光合日变化均呈明显的双峰型曲线,存在明显的光合"午休"现象,但麦冬光合"午休"为非气孔限制,而山麦冬光合"午休"为气孔限制。(4)麦冬的光抑制现象较山麦冬严重,这可能与麦冬的Car含量显著偏低有关。研究表明,山麦冬和麦冬的叶片均具有明显的半阴性植物结构特征,但山麦冬对光照环境的适应性以及光合能力更强。     

温室油桃光合作用与生理生态因子的关系

以日光温室栽培4年生油桃品种'艳光'为试材,采用LI-6400光合仪测定了成熟期的叶片净光合速率(Pn)以及气孔导度(Gs)、蒸腾速率(Tr)、光合有效辐射(PAR)、叶片温度(Tl)和CO2浓度(Ca)等生理生态因子的日变化,并运用数理统计方法分析了Pn与各因子的关系,为温室油桃合理栽培选择提供理论依据.结果表明:'艳光'油桃成熟期叶片的Pn日变化为"双峰"曲线,最高峰出现在12:00左右,次高峰出现在16:00左右,存在"午休"现象,非气孔因素是导致"午休"现象的主要原因;Pn与Gs、Tr和Ca均存在显著的二次曲线关系,与PAR有显著双曲线关系,与Tl有显著"S"型曲线关系;温室油桃光合作用的最适温度为25℃,光饱和点和光补偿点分别为860和26 μmol·m-2·s-1;二氧化碳饱和点和补偿点分别为1 340和54 μmol/mol.因此,在本实验条件下,温室油桃果实成熟期应当保证充足水分供应,并在正午前后适当采取降温措施,尽量减轻叶片气孔导度和蒸腾速率下降及光合'午休'现象发生程度,保证正午光合作用的正常进行,提高油桃的光能利用率.     

UV-B辐射增强对马铃薯叶片结构及光合参数的影响

叶片作为植物进行光合作用的主要器官,在长期进化过程中形成了对不同光照环境条件的形态可塑性和相应的适应机制,以保证植物能在变化的、非适宜环境下的生存与繁衍。随着大气臭氧层衰减引起地表UV-B辐射增强,其对植物叶片结构和光合作用的影响显著,但这种气候变化趋势对马铃薯叶片形态结构、光合作用的影响尚不明确。设置增强UV-B辐射2.5 kJm~(-2)d~(-1)(T1)、5.0 kJm~(-2)d~(-1)(T2)、自然光(CK)3个处理,以6个马铃薯品种(系)为材料,研究增强辐射对不同基因型马铃薯叶片结构和光合参数的影响。结果表明:增强的UV-B辐射使马铃薯叶片解剖结构不同程度增厚,叶片厚度增加;叶片气孔和非腺毛的密度增加明显,腺毛有增多倾向。扫描电镜显示处理后的近轴面叶片角质层厚度增加,蜡质晶体增多,但表皮细胞变小且失水萎缩,细胞轮廓模糊;气孔、腺毛及非腺毛附属结构受胁迫影响呈萎缩状态。透射电镜显示处理后的叶肉细胞中基粒类囊体肿胀,结构层次紊乱,胁迫引起细胞质壁分离,细胞壁扭曲并有较多的沉淀物;部分品种过氧化物酶体可见清晰的过氧化氢酶晶体。叶片缩小增厚、腺毛增多、角质层和蜡质增厚、胞内积累过氧化氢酶的形态适应和生理响应并未能有效减少UV-B辐射对光合参数和光合效率的影响,合作88、丽薯6号、师大6号的净光合速率、气孔导度等参数均受到抑制,光能利用效率明显降低,属于UV-B辐射敏感型品种;剑川红21-3、21-1和转心乌3个品种(系)的相关光合特性几乎不受影响,显示云南地方品种具有较强的UV-B辐射耐受性,有待于进一步从生理生化和分子水平探究更多的适应机制。     

曼陀罗光合特性研究

采用LI-6400型便携式光合测定仪对潜在能源植物曼陀罗(Datura stramonium L.)在6月份至9月份的光合特性指标(净光合速率、光合有效辐射强度和气孔导度)的日变化以及净光合速率和叶绿素含量的月平均值变化进行了研究,并采用非直角双曲线对曼陀罗叶片净光合速率的光响应曲线和C02响应曲线进行了拟合.结果表明:实验期间(6月份至9月份),光合有效辐射强度和曼陀罗叶片净光合速率的日变化均呈"单峰型",峰值出现在11:00左右;7月份的净光合速率峰值最高,为19.01μmol·m-2·s-1;气孔导度日变化呈"双峰型",最大峰值和次峰值分别出现在12:00和14:00.不同月份的净光合速率月平均值有极显著差异(P＜0.01),其中7月份的净光合速率月平均值最大,为9.41 μmol·m-2·s-1;不同月份叶绿素的月平均含量变化与净光合速率月平均值的变化相似,7月份叶绿素的月平均含量也最高,但叶绿素a、b及总叶绿素月平均含量有一定差异.曼陀罗叶片净光合速率的光响应曲线和CO2响应曲线相似,在光合有效辐射强度和CO2浓度较低的条件下呈线性升高,至饱和点后缓慢升高并趋于稳定;曼陀罗叶片的光补偿点为22.42 μmol·m-2·s-1,光饱和点为689.26 μmol·m-2·s-1;CO2补偿点为74.06μmol·mol-1,CO2饱和点为1 331.97μmol·mol-1.研究结果说明,曼陀罗为具有一定耐阴能力的阳性植物,但CO2同化能力较弱.     

引种红树与中国乡土红树幼苗光合特性研究

用Li-COR 6400便携式光合作用测定系统对海南东寨港自然保护区人工育苗的中国乡土红树--海桑、引种红树--无瓣海桑和拉关木幼苗光合特性进行比较研究.结果显示:(1)无瓣海桑和拉关木叶片净光合速率日变化呈双峰曲线,最高峰出现在12:00,次高峰出现在15:00,而海桑呈现单峰曲线,峰值出现在12:00左右;无瓣海桑和拉关木叶片净光合速率的峰值均高于海桑.(2)3种红树叶片净光合速率和蒸腾速率的峰值均在同一时间(12:00)出现;胞间CO2浓度不随气孔导度的降低而减小,控制红树幼苗光合速率因子为非气孔限制;拉关木叶片水分利用效率要低于无瓣海桑和海桑.(3)与海桑幼苗相比,引种的无瓣海桑和拉关木幼苗的光补偿点和光饱和点均较低,而其表观量子效率较高,其光饱和净光合速率(Pmax) 较大,且其CO2补偿点较低,CO2利用率较高,强光下的光合能力高.研究表明,无瓣海桑比海桑和拉关木具有更好的低光适应能力;拉关木有着较高的光合同化能力,其幼苗对生境的适应能力高于海桑属植物.     

湛江5种红树林树种光合作用特性及光合固碳能力研究

应用Li-6400便携式光合作用测定系统,对湛江市特呈岛5种红树林树种的净光合速率日变化和光合作用—光响应曲线进行了测定,探讨了各树种的光合作用特性以及主要影响因子并评估其固碳能力大小。结果表明:在自然光照条件下,秋茄和红海榄叶片净光合速率(Pn)的日变化曲线呈单峰型,白骨壤、木榄和桐花树为双峰型,光合"午休"现象明显,而且峰值分别出现在10:00和14:00左右。其中,白骨壤和木榄的光合午休主要由气孔限制因素引起,桐花树主要由非气孔限制因素引起。通径分析表明,光合有效辐射(PAR)是影响白骨壤和桐花树叶片Pn的主要决策因子,而叶面大气蒸汽压亏缺(VPD)是主要限制因子;影响秋茄和红海榄叶片Pn的主要决策因子是气孔导度(Gs),主要限制因子是叶温(Tl);影响木榄叶片Pn的主要决策因子是气孔导度(Gs)。基于叶片净光合作用速率的各树种日净固碳量存在显著性差异(P0.01),秋茄的日净固碳量最大(13.83 g·m-2·d-1),其次为白骨壤和桐花树(9.48和8.24 g·m-2·d-1),木榄和红海榄的较小(6.72和6.30 g·m-2·d-1)。5种红树林树种的光补偿点(LCP)介于28.3~137.0μmol·m-2·s-1之间,显示了阳生植物的特性。光饱和点(LSP)介于169.3~1189.3μmol·m-2·s-1之间,桐花树最大,红海榄最小。5种红树林树种的表观量子效率(AQY)存在极显著差异(P0.01),白骨壤最高为0.064 mol·mol-1,木榄最低,仅为0.005 mol·mol-1。5种红树林植物叶片的光响应参数与日净固碳量的关联度大小顺序为最大净光合速率(Pmax)、LSP-LCP、AQY、LSP、LCP。     

黑河中游边缘绿洲湿润和干旱条件下棉花叶片光合特性比较

在甘肃河西走廊中部黑河中游临泽北部边缘绿洲区,测定了湿润和干旱条件下早熟陆地棉(Gossypiumhirsutum L.)品种'新陆早8号'棉花叶片的气体交换参数及叶绿素荧光参数动态日变化.结果表明:(1)不同土壤水分条件下棉花叶片均出现"光合午休"现象.但均未出现光抑制;干旱条件下91起棉花"光合午休"以非气孔因素为主,湿润条件下非气孔因素和气孔因素先后共同起作用.(2)干旱条件下棉花叶片净光合速率(Pn)在8:00～11:OO高于湿润条件下,且均值提高10.5%,而其在12:OO～18:00低于湿润条件下,且均值降低16.5%;干旱条件下叶片Pn和蒸腾速率(Tr)日均值(8:00～18:00)分别比湿润条件下降低4.9%和26.1%,水分利用效率(WUE)却提高了23.4%且达到显著水平.(3)不同土壤水分条件下棉花叶片PSlI最大光化学效率(Fv/Fm)都于14:00达全天最低值,但最低值均大于0.80.研究发现,湿润土壤条件并不能消除棉花的"光合午休"现象;干旱土壤条件也未使棉花出现光抑制,却使一定时段的水分利用效率显著提高.     

Foreign exploration for Scirtothrips perseae Nakahara (Thysanoptera: Thripidae) and associated natural enemies on avocado (Persea americana Miller)

Scirtothrips perseae Nakahara was discovered attacking avocados in California, USA, in 1996. Host plant surveys in California indicated that S. perseae has a highly restricted host range with larvae being found only on avocados, while adults were collected from 11 different plant species. As part of a management program for this pest, a “classical” biological control program was initiated and foreign exploration was conducted to delineate the home range of S. perseae, to survey for associated natural enemies and inventory other species of phytophagous thrips on avocados grown in Mexico, Guatemala, Costa Rica, the Dominican Republic, Trinidad, and Brazil. Foreign exploration efforts indicate that S. perseae occurs on avocados grown at high altitudes (>1500 m) from Uruapan in Mexico south to areas around Guatemala City in Guatemala. In Costa Rica, S. perseae is replaced by an undescribed congener as the dominant phytophagous thrips on avocados grown at high altitudes (>1300 m). No species of Scirtothrips were found on avocados in the Dominican Republic, Trinidad, or Brazil. In total, 2136 phytophagous thrips were collected and identified, representing over 47 identified species from at least 19 genera. The significance of these species records is discussed. Of collected material 4% were potential thrips biological control agents. Natural enemies were dominated by six genera of predatory thrips (Aeolothrips, Aleurodothrips, Franklinothrips, Leptothrips, Scolothrips, and Karnyothrips). One genus each of parasitoid (Ceranisus) and predatory mite (Balaustium) were found. Based on the results of our sampling techniques, prospects for the importation of thrips natural enemies for use in a “classical” biological control program in California against S. perseae are not promising.     

Molecular phylogeny of Phebalium (Rutaceae: Boronieae) and related genera based on the nrDNA regions ITS 1+2

Parsimony analyses of the internal transcribed spacer regions of nuclear ribosomal DNA (ITS 1 & ITS 2) for 38 taxa sampled from the Phebalium group (Rutaceae: Boronieae) and two outgroups confirm that, with the exception of Phebalium sensu stricto and Rhadinothamnus, six of the currently recognised genera within the group are monophyletic. The data indicate that Phebaliums. str. is paraphyletic with respect to Microcybe, and Rhadinothamnus is paraphyletic with respect to Chorilaena. Rhadinothamnus and Chorilaena together are the sister group to Nematolepis. Drummondita, included as an outgroup taxon, clustered within the ingroup as sister to Muiriantha and related to Asterolasia.The phylogeny suggests that the evolution of major clades within a number of these genera (e.g. Phebalium) relates to vicariance events between eastern and south-western Australia. Leionema is an eastern genus, with the most basal taxon being the morphologically distinct Leionema ellipticum from northern Queensland. Leionema also includes one species from New Zealand, but this species (as with some others) proved difficult to sequence and its phylogenetic position remains unknown. Taxonomic changes at the generic level are recommended.The authors wish to thank Paul G.Wilson, PERTH, for advice and discussion, and Paul Forster, BRI, for collecting and providing material of Leionema ellipticum. The project was supported by a Melbourne University Postgraduate Award (to BM), the Australian Biological Resources Study (ABRS), Australian Systematic Botany Society and Wolf Den (Australia) Investments.     

New species and new combinations in Peruvian Orchidaceae

seventeen new species and combinations are proposed in the generaChondrorhyncha, Cischweinfia, Cochlioda, Eloyella, Encyclia, Kefersteinia, Koellensteinia, Macroclinium, Rodriguezia, Solenidiopsis, andStenia. All new species are illustrated. A key is provided for 2-flowered species ofMacroclinium, PeruvianSigmatostalix, and PeruvianStenia. Solenidium (Solenidiopsis) peruvianum Schltr. is lectotypified.     

Phylogeny of cardinalfishes (Teleostei: Gobiiformes: Apogonidae) and the evolution of visceral bioluminescence

The cardinalfishes (Apogonidae) are a diverse clade of small, mostly reef-dwelling fishes, for which a variety of morphological data have not yielded a consistent phylogeny. We use DNA sequence to hypothesize phylogenetic relationships within Apogonidae and among apogonids and other acanthomorph families, to examine patterns of evolution including the distribution of a visceral bioluminescence system. In conformance with previous studies, Apogonidae is placed in a clade with Pempheridae, Kurtidae, Leiognathidae, and Gobioidei. The apogonid genus Pseudamia is recovered outside the remainder of the family, not as sister to the superficially similar genus Gymnapogon. Species sampled from the Caribbean and Western Atlantic (Phaeoptyx, Astrapogon, and some Apogon species) form a clade, as do the larger-bodied Glossamia and Cheilodipterus. Incidence of visceral bioluminescence is found scattered throughout the phylogeny, independently for each group in which it is present. Examination of the fine structure of the visceral bioluminescence system through histology shows that light organs exhibit a range of morphologies, with some composed of complex masses of tubules (Siphamia, Pempheris, Parapriacanthus) and others lacking tubules but containing chambers formed by folds of the visceral epithelium (Acropoma, Archamia, Jaydia, and Rhabdamia). Light organs in Siphamia, Acropoma, Pempheris and Parapriacanthus are distinct from but connected to the gut; those in Archamia, Jaydia, and Rhabdamia are simply portions of the intestinal tract, and are little differentiated from the surrounding tissues. The presence or absence of symbiotic luminescent bacteria does not correlate with light organ structure; the tubular light organs of Siphamia and chambered tubes of Acropoma house bacteria, those in Pempheridae and the other Apogonidae do not.     

Entwicklungsgeschichte und Ultrastruktur von Pollenkitt und Exine bei nahe verwandten entomophilen und anemophilen Angiospermensippen derAlismataceae,Liliaceae, Juncaceae,Cyperaceae, Poaceae undAraceae

Some closely related members of the monocotyledonous familiesAlismataceae, Liliaceae, Juncaceae, Cyperaceae, Poaceae andAraceae with variable modes of pollination (insect- and wind-pollination) were studied in relation to the ultrastructure of pollenkitt and exine (amount, consistency and distribution of pollenkitt on the surface of pollen grains). The character syndromes of pollen cementing in entomophilous, anemophilous and intermediate (ambophilous or amphiphilous) monocotyledons are the same in principal as in dicotyledons. Comparing present with former results one can summarize: 1) The pollenkitt is always produced in the same manner by the anther tapetum in all angiosperm sub-classes. 2) The variable stickiness of entomophilous and anemophilous pollen always depends on the particular distribution and consistency of the pollenkitt, but not its amount on the pollen surface. 3) The mostly dry and powdery pollen of anemophilous plants always contains a variable amount of inactive pollenkitt in its exine cavities. 4) A step-by step change of the pollen cementing syndrome can be observed from entomophily towards anemophily. 5) From the omnipresence of pollenkitt in all wind-pollinated angiosperms studied one can conclude that the ancestors of anemophilous angiosperms probably have been zoophilous (i.e. entomophilous) throughout.

     

Biological control of three floating water weeds,<Emphasis Type="Italic">Eichhornia crassipes,Pistia stratiotes</Emphasis>, and <Emphasis Type="Italic">Salviniamolesta</Emphasis> in the Republic of Congo

Since 1999, four specific weevils (Coleoptera, Curculionidae) were released in the Republic of Congo against three exotic floating water weeds: Neochetina eichhorniae Warner and N. bruchi Hustache against water hyacinth, Neohydronomus affinis Hustache against water lettuce, and Cyrtobagous salviniae Calder and Sands against water fern. Recoveries of exotic weevils were made from all 24 release sites except one, and all four species have established and spread (up to 800 km for water hyacinth weevils). Within a few years of releases, control of water fern and water lettuce was such that fishing and navigation could be resumed, while reductions of water hyacinth populations were only beginning.     

Taxonomic status of the species of the green algal genusNeochloris

Komárek has recently reviewed the various species assigned to the green algal genusNeochloris Starr (Chlorococcales, Chlorococcaceae) and removed those with uninucleate vegetative cells to a new genus,Ettlia. Watanabe & Floyd, unaware ofKomárek's work, also reviewed the species ofNeochloris and distributed them among three genera—Neochloris, Chlorococcopsis gen. nov., andParietochloris gen. nov.—on the basis of details of the covering of the zoospore and the arrangement of the basal bodies of the flagellar apparatus. This paper reconciles these two treatments and makes additional recommendations at the ranks of genus, family, order, and class.     

安徽牯牛降的丝孢菌Ⅰ

本文报导作者采自安徽枯牛降自然保护区的18种丝孢菌,分属于5个属,其中有3个新种:牛皮冻生尾孢(Cercospora paederiicola),山鸡椒假尾饱(Pseudocercospora litseae-cubebae),鸡血藤生假尾孢(P. millettiicola)和2个中国新纪录。文中对新种进行了描述及绘图,新记录种作了简要说明。研究的标本保存在中国科学院微生物研究所真菌标本室(HMAS)。     

Changes of dung beetle communities from rainforests towards agroforestry systems and annual cultures in Sulawesi (Indonesia)

Little is known about how tropical land-use systems contribute to the conservation of functionally important insect groups, including dung beetles. In a study at the margin of Lore Lindu National Park (a biodiversity hotspot in Central Sulawesi, Indonesia) dung-beetle communities were sampled in natural forest, young secondary forest, agroforestry systems (cacao plantations with shade trees) and annual cultures (maize fields), each with four replicates (n = 16 sites). At each site we used 10 pitfall traps, baited with cattle dung, along a 100 m transect for six 3-day periods. The number of trapped specimens and species richness at the natural forest sites was higher than in all land-use systems, which did not significantly differ. Each land-use system contained, on average, 75% of the species richness of the natural forest, thereby indicating their importance for conservation. However, a two-dimensional scaling plot based on NESS indices (m = 6) indicated distinct dung beetle communities for both forest types, while agroforestry systems and annual cultures exhibited a pronounced overlap. Mean body size of dung beetles was not significantly influenced by land-use intensity. Five of the six most abundant dung beetle species were recorded in all habitats, whereas the abundance of five other species was significantly related to habitat type. Mean local abundance and number of occupied sites were closely correlated, further indicating little habitat specialisation. The low dung beetle diversity (total of 18 recorded species) may be due to the absence of larger mammals in Sulawesi during historical times, even though Sulawesi is the largest island of Wallacea. In conclusion, the dung beetle fauna of the lower montane forest zone in Central Sulawesi appears to be relatively robust to man-made habitat changes and the majority of species did not exhibit strong habitat preferences.